List of TCP and UDP port numbers

This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for duplex, bidirectional traffic. They usually use port numbers that match the services of the corresponding TCP or UDP implementation, if they exist.

The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses.[1] However, many unofficial uses of both well-known and registered port numbers occur in practice. Similarly, many of the official assignments refer to protocols that were never or are no longer in common use. This article lists port numbers and their associated protocols that have experienced significant uptake.

Table legend
Legend of TCP and UDP protocol table cells for port numbers
Cell Description
Yes Described protocol is assigned by IANA for this port, and is: standardized, specified, or widely used for such.
Unofficial Described protocol is not assigned by IANA for this port, but is: standardized, specified, or widely used for such.
Assigned Described protocol is assigned by IANA for this port,[2] but is not: standardized, specified, or widely used for such.
No Described protocol is not: assigned by IANA for this port, standardized, specified, or widely used for such.
Reserved Port is reserved by IANA,[2] generally to prevent collision having its previous use removed.[3][4] The port number may be available for assignment upon request to IANA.[3]

Well-known ports

The port numbers in the range from 0 to 1023 (0 to 210 − 1) are the well-known ports or system ports.[3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the well-known ports.[5]

Well-known ports
Port TCP UDP SCTP DCCP Description
0Reserved In programming APIs (not in communication between hosts), requests a system-allocated (dynamic) port[6]
1YesAssigned TCP Port Service Multiplexer (TCPMUX). Historic. Both TCP and UDP have been assigned to TCPMUX by IANA,[2] but by design only TCP is specified.[7]
2Assigned compressnet (Management Utility)[3]
3Assigned compressnet (Compression Process)[3]
5Assigned Remote Job Entry[8] was historically using socket 5 in its old socket form, while MIB PIM has identified it as TCP/5[9] and IANA has assigned both TCP and UDP 5 to it.
7Yes Echo Protocol[10][11]
9 YesYes[12]Assigned Discard Protocol[13]
NoUnofficial Wake-on-LAN[14]
11Yes Active Users (systat service)[15][16]
13Yes Daytime Protocol[17]
15UnofficialNo Previously netstat service[2][15]
17Yes Quote of the Day (QOTD)[18]
18Yes Message Send Protocol[19][20]
19Yes Character Generator Protocol (CHARGEN)[21]
20YesAssignedYes[12] File Transfer Protocol (FTP) data transfer[11]
21YesAssignedYes[12] File Transfer Protocol (FTP) control (command)[11][12][22][23]
22YesAssignedYes[12] Secure Shell (SSH),[11] secure logins, file transfers (scp, sftp) and port forwarding
23YesAssigned Telnet protocol—unencrypted text communications[11][24]
25YesAssigned Simple Mail Transfer Protocol (SMTP),[11][25] used for email routing between mail servers
27Assigned nsw-fe (NSW User System FE)[3]
28Unofficial Palo Alto Networks' Panorama High Availability (HA) sync encrypted port.[26]
29Assigned msg-icp (MSG ICP)[3]
31Assigned msg-auth (MSG Authentication)[3]
33Assigned dsp (Display Support Protocol)[3]
37Yes Time Protocol[27]
38Assigned rap (Route Access Protocol)[3]
39Assigned rlp (Resource Location Protocol)[3]
41Assigned graphics (Graphics)[3]
42AssignedYes Host Name Server Protocol[28]
43YesAssigned WHOIS protocol[29][30][31]
44Assigned mpm-flags (MPM FLAGS Protocol)[3]
45Assigned mpm (Message Processing Module [recv])[3]
46Assigned mpm-snd (MPM [default send])[3]
47Reserved
48Assigned auditd (Digital Audit Daemon)[3]
49Yes TACACS Login Host protocol.[32] TACACS+, still in draft which is an improved but distinct version of TACACS, only uses TCP 49.[33]
50Assigned re-mail-ck (Remote Mail Checking Protocol)[3]
51Reserved Historically used for Interface Message Processor logical address management,[34] entry has been removed by IANA on 2013-05-25
52Assigned Xerox Network Systems (XNS) Time Protocol. Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP.[35]
53Yes Domain Name System (DNS)[36][11]
54Assigned Xerox Network Systems (XNS) Clearinghouse (Name Server). Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP.[35]
55Assigned isi-gl (ISI Graphics Language)[3]
56Assigned Xerox Network Systems (XNS) Authentication Protocol. Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP.[35]
58Assigned Xerox Network Systems (XNS) Mail. Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP.[35]
61Reserved Historically assigned to the NIFTP-Based Mail protocol,[37] but was never documented in the related IEN.[38] The port number entry was removed from IANA's registry on 2017-05-18.[2]
62Assigned acas (ACA Services)[3]
63Assigned whoispp (whois++)[3]
64Assigned covia (Communications Integrator (CI))[3]
65Assigned tacacs-ds (TACACS-Database Service)[3]
66Assigned sql-net (Oracle SQL*NET)[3]
67AssignedYes Bootstrap Protocol (BOOTP) server;[11] also used by Dynamic Host Configuration Protocol (DHCP)
68AssignedYes Bootstrap Protocol (BOOTP) client;[11] also used by Dynamic Host Configuration Protocol (DHCP)
69AssignedYes Trivial File Transfer Protocol (TFTP)[11][39][40][41]
70YesAssigned Gopher protocol[42]
71–74Yes NETRJS protocol[43][44][45]
76Assigned deos (Distributed External Object Store)[3]
78Assigned vettcp (vettcp)[3]
79YesAssigned Finger protocol[11][46][47]
80YesYes[12] Hypertext Transfer Protocol (HTTP)[48][49] uses TCP in versions 1.x and 2. HTTP/3 uses QUIC,[50] a transport protocol on top of UDP.
81Unofficial TorPark onion routing
82Assigned xfer (XFER Utility)[3]
82Unofficial TorPark control
83Assigned mit-ml-dev (MIT ML Device)[3]
84Assigned ctf (Common Trace Facility)[3]
85Assigned mit-ml-dev (MIT ML Device)[3]
86Assigned mfcobol (Micro Focus Cobol)[3]
88Yes Kerberos[11][51][52] authentication system
89Assigned su-mit-tg (SU/MIT Telnet Gateway)[3]
90Assigned dnsix (DNSIX Security Attribute Token Map)[3]
90Unofficial PointCast (dotcom)[2]
91Assigned mit-dov (MIT Dover Spooler)[3]
92Assigned npp (Network Printing Protocol)[3]
93Assigned dcp (Device Control Protocol)[3]
94Assigned objcall (Tivoli Object Dispatcher)[3]
95YesAssigned SUPDUP, terminal-independent remote login[53]
96Assigned dixie (DIXIE Protocol Specification)[3]
97Assigned swift-rvf (Swift Remote Virtual File Protocol)[3]
98Assigned tacnews (TAC News)[3]
99Assigned metagram (Metagram Relay)[3]
101YesAssigned NIC host name[54]
102YesAssigned ISO Transport Service Access Point (TSAP) Class 0 protocol;[55][56]
104Yes Digital Imaging and Communications in Medicine (DICOM; also port 11112)
105Yes CCSO Nameserver[57]
106UnofficialNo macOS Server, (macOS) password server[11]
107Yes Remote User Telnet Service (RTelnet)[58]
108Yes IBM Systems Network Architecture (SNA) gateway access server
109YesAssigned Post Office Protocol, version 2 (POP2)[59]
110YesAssigned Post Office Protocol, version 3 (POP3)[11][60][61]
111Yes Open Network Computing Remote Procedure Call (ONC RPC, sometimes referred to as Sun RPC)
113 YesNo Ident, authentication service/identification protocol,[11][62] used by IRC servers to identify users
YesAssigned Authentication Service (auth), the predecessor to identification protocol. Used to determine a user's identity of a particular TCP connection.[63]
115YesAssigned Simple File Transfer Protocol[64]
117Yes UUCP Mapping Project (path service)
118Yes Structured Query Language (SQL) Services
119YesAssigned Network News Transfer Protocol (NNTP),[11] retrieval of newsgroup messages[65][66]
123AssignedYes Network Time Protocol (NTP), used for time synchronization[11]
126Yes Formerly Unisys Unitary Login, renamed by Unisys to NXEdit. Used by Unisys Programmer's Workbench for Clearpath MCP, an IDE for Unisys MCP software development
135 Yes DCE endpoint resolution
Yes Microsoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service,[67] used to remotely manage services including DHCP server, DNS server and WINS. Also used by DCOM
137Yes NetBIOS Name Service, used for name registration and resolution[68][69]
138AssignedYes NetBIOS Datagram Service[11][68][69]
139YesAssigned NetBIOS Session Service[68][69]
143YesAssigned Internet Message Access Protocol (IMAP),[11] management of electronic mail messages on a server[70]
151Assigned HEMS
152Yes Background File Transfer Program (BFTP)[71]
153Yes Simple Gateway Monitoring Protocol (SGMP), a protocol for remote inspection and alteration of gateway management information[72]
156Yes Structured Query Language (SQL) Service
158Yes Distributed Mail System Protocol (DMSP, sometimes referred to as Pcmail)[73]
161AssignedYes Simple Network Management Protocol (SNMP)[74][11]
162Yes Simple Network Management Protocol Trap (SNMPTRAP)[74][75]
165Assigned Xerox
169Assigned SEND
170Yes Network PostScript print server
177Yes X Display Manager Control Protocol (XDMCP), used for remote logins to an X Display Manager server[76]
179YesAssignedYes[12] Border Gateway Protocol (BGP),[77] used to exchange routing and reachability information among autonomous systems (AS) on the Internet
180Assigned ris
194Yes Internet Relay Chat (IRC)[78]
199Yes SNMP Unix Multiplexer (SMUX)[79]
201Yes AppleTalk Routing Maintenance
209YesAssigned Quick Mail Transfer Protocol[80]
210Yes ANSI Z39.50
213Yes Internetwork Packet Exchange (IPX)
218Yes Message posting protocol (MPP)
220Yes Internet Message Access Protocol (IMAP), version 3
225–241Reserved
249–255Reserved
259Yes Efficient Short Remote Operations (ESRO)
262Yes Arcisdms
264Yes Border Gateway Multicast Protocol (BGMP)
280Yes http-mgmt
300Unofficial ThinLinc Web Access, Spartan protocol [81]
308Yes Novastor Online Backup
311YesAssigned macOS Server Admin[11] (officially AppleShare IP Web administration[2])
312UnofficialNo macOS Xsan administration[11]
318Yes PKIX Time Stamp Protocol (TSP)
319Yes Precision Time Protocol (PTP) event messages
320Yes Precision Time Protocol (PTP) general messages
350Yes Mapping of Airline Traffic over Internet Protocol (MATIP) type A
351Yes MATIP type B
356Yes cloanto-net-1 (used by Cloanto Amiga Explorer and VMs)
366Yes On-Demand Mail Relay (ODMR)
369Yes Rpc2portmap
370 Yes codaauth2, Coda authentication server
Yes securecast1, outgoing packets to NAI's SecureCast servers[82]As of 2000
371Yes ClearCase albd
376Yes Amiga Envoy Network Inquiry Protocol
383Yes HP data alarm manager
384Yes A Remote Network Server System
387Yes AURP (AppleTalk Update-based Routing Protocol)[83]
388YesAssigned Unidata LDM near real-time data distribution protocol[84][85]
389YesAssigned Lightweight Directory Access Protocol (LDAP)[11]
399Yes Digital Equipment Corporation DECnet+ (Phase V) over TCP/IP (RFC1859)
401Yes Uninterruptible power supply (UPS)
427Yes Service Location Protocol (SLP)[11]
433Yes NNTP, part of Network News Transfer Protocol
434Yes Mobile IP Agent (RFC 5944)
443YesYes[12] Hypertext Transfer Protocol Secure (HTTPS)[48][49] uses TCP in versions 1.x and 2. HTTP/3 uses QUIC,[50] a transport protocol on top of UDP.
444Yes Simple Network Paging Protocol (SNPP), RFC 1568
445 Yes Microsoft-DS (Directory Services) Active Directory,[86] Windows shares
YesAssigned Microsoft-DS (Directory Services) SMB[11] file sharing
464Yes Kerberos Change/Set password
465[note 1] YesNo SMTP over implicit SSL (obsolete)[87]
YesNo URL Rendezvous Directory for Cisco SSM (primary usage assignment)[88]
YesNo Authenticated SMTP[11] over TLS/SSL (SMTPS) (alternative usage assignment)[89]
475Yes tcpnethaspsrv, Aladdin Knowledge Systems Hasp services
476–490Unofficial Centro Software ERP ports
491Unofficial GO-Global remote access and application publishing software
497Yes Retrospect
500AssignedYes Internet Security Association and Key Management Protocol (ISAKMP) / Internet Key Exchange (IKE)[11]
502Yes Modbus Protocol
504Yes Citadel, multiservice protocol for dedicated clients for the Citadel groupware system
510Yes FirstClass Protocol (FCP), used by FirstClass client/server groupware system
512 Yes Rexec, Remote Process Execution
Yes comsat, together with biff
513 Yes rlogin
Yes Who[90]
514 Unofficial Remote Shell, used to execute non-interactive commands on a remote system (Remote Shell, rsh, remsh)
NoYes Syslog,[11] used for system logging
515YesAssigned Line Printer Daemon (LPD),[11] print service
517Yes Talk
518Yes NTalk
520 Yes efs, extended file name server
Yes Routing Information Protocol (RIP)
521Yes Routing Information Protocol Next Generation (RIPng)
524Yes NetWare Core Protocol (NCP) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc.
525Yes Timed, Timeserver
530Yes Remote procedure call (RPC)
532YesAssigned netnews[11]
533Yes netwall, for emergency broadcasts
540Yes Unix-to-Unix Copy Protocol (UUCP)
542Yes commerce (Commerce Applications)
543Yes klogin, Kerberos login
544Yes kshell, Kerberos Remote shell
546Yes DHCPv6 client
547Yes DHCPv6 server
548YesAssigned Apple Filing Protocol (AFP) over TCP[11]
550Yes new-rwho, new-who[90]
554Yes Real Time Streaming Protocol (RTSP)[11]
556Yes Remotefs, RFS, rfs_server
560Yes rmonitor, Remote Monitor
561Yes monitor
563Yes NNTP over TLS/SSL (NNTPS)
564Unofficial 9P (Plan 9)
585No Previously assigned for use of Internet Message Access Protocol over TLS/SSL (IMAPS), now deregistered in favour of port 993.[91]
587YesAssigned email message submission[11][92] (SMTP)
591Yes FileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80)
593Yes HTTP RPC Ep Map, Remote procedure call over Hypertext Transfer Protocol, often used by Distributed Component Object Model services and Microsoft Exchange Server
601Yes Reliable Syslog Service — used for system logging
604Yes TUNNEL profile,[93] a protocol for BEEP peers to form an application layer tunnel
623Yes ASF Remote Management and Control Protocol (ASF-RMCP) & IPMI Remote Management Protocol
625UnofficialNo Open Directory Proxy (ODProxy)[11]
631 Yes Internet Printing Protocol (IPP)[11]
Unofficial Common Unix Printing System (CUPS) administration console (extension to IPP)
635Yes RLZ DBase
636YesAssigned Lightweight Directory Access Protocol over TLS/SSL (LDAPS)[11]
639Yes Multicast Source Discovery Protocol, MSDP
641Yes SupportSoft Nexus Remote Command (control/listening), a proxy gateway connecting remote control traffic
643Yes SANity
646Yes Label Distribution Protocol (LDP), a routing protocol used in MPLS networks
647Yes DHCP Failover protocol[94]
648Yes Registry Registrar Protocol (RRP)[95]
651Yes IEEE-MMS
653Yes SupportSoft Nexus Remote Command (data), a proxy gateway connecting remote control traffic
654Yes Media Management System (MMS) Media Management Protocol (MMP)[96]
655Yes Tinc VPN daemon
657Yes IBM RMC (Remote monitoring and Control) protocol, used by System p5 AIX Integrated Virtualization Manager (IVM)[97] and Hardware Management Console to connect managed logical partitions (LPAR) to enable dynamic partition reconfiguration
660YesAssigned macOS Server administration,[2] version 10.4 and earlier[11]
666 Yes Doom, the first online first-person shooter
Unofficial airserv-ng, aircrack-ng's server for remote-controlling wireless devices
674Yes Application Configuration Access Protocol (ACAP)
684Yes CORBA IIOP SSL[98]
688Yes REALM-RUSD (ApplianceWare Server Appliance Management Protocol)
690Yes Velneo Application Transfer Protocol (VATP)
691Yes MS Exchange Routing
694Yes Linux-HA high-availability heartbeat
695Yes IEEE Media Management System over SSL (IEEE-MMS-SSL)[99]
698Yes Optimized Link State Routing (OLSR)
700Yes Extensible Provisioning Protocol (EPP), a protocol for communication between domain name registries and registrars (RFC 5734)
701Yes Link Management Protocol (LMP),[100] a protocol that runs between a pair of nodes and is used to manage traffic engineering (TE) links
702Yes IRIS[101][102] (Internet Registry Information Service) over BEEP (Blocks Extensible Exchange Protocol)[103] (RFC 3983)
706Yes Secure Internet Live Conferencing (SILC)
711Yes Cisco Tag Distribution Protocol[104][105][106]—being replaced by the MPLS Label Distribution Protocol[107]
712Yes Topology Broadcast based on Reverse-Path Forwarding routing protocol (TBRPF; RFC 3684)
749Yes Kerberos administration[11]
750Yes kerberos-iv, Kerberos version IV
751Unofficial kerberos_master, Kerberos authentication
752Unofficial passwd_server, Kerberos password (kpasswd) server
753 Yes Reverse Routing Header (RRH)[108]
Unofficial userreg_server, Kerberos userreg server
754 Yes tell send
Unofficial krb5_prop, Kerberos v5 slave propagation
760Unofficial krbupdate [kreg], Kerberos registration
782Unofficial Conserver serial-console management server
783Unofficial SpamAssassin spamd daemon
800Yes mdbs-daemon
802Yes MODBUS/TCP Security[109]
808Unofficial Microsoft Net.TCP Port Sharing Service
829YesAssigned Certificate Management Protocol[110]
830Yes NETCONF over SSH
831Yes NETCONF over BEEP
832Yes NETCONF for SOAP over HTTPS
833Yes NETCONF for SOAP over BEEP
843Unofficial Adobe Flash[111]
847Yes DHCP Failover protocol
848Yes Group Domain Of Interpretation (GDOI) protocol
853 Yes DNS over TLS (RFC 7858)
Yes DNS over QUIC or DNS over DTLS[112]
860Yes iSCSI (RFC 3720)
861Yes OWAMP control (RFC 4656)
862Yes TWAMP control (RFC 5357)
873Yes rsync file synchronization protocol
888 Unofficial cddbp, CD DataBase (CDDB) protocol (CDDBP)
Unofficial IBM Endpoint Manager Remote Control
897Unofficial Brocade SMI-S RPC
898Unofficial Brocade SMI-S RPC SSL
902Unofficial VMware ESXi[113][114]
903Unofficial VMware ESXi[113][114]
953YesReserved BIND remote name daemon control (RNDC)[115][116]
981Unofficial Remote HTTPS management for firewall devices running embedded Check Point VPN-1 software[117]
987 Unofficial Sony PlayStation Wake On Lan
Unofficial Microsoft Remote Web Workplace, a feature of Windows Small Business Server[118]
988Unofficial Lustre (file system)[119] Protocol (data).
989Yes FTPS Protocol (data), FTP over TLS/SSL
990Yes FTPS Protocol (control), FTP over TLS/SSL
991Yes Netnews Administration System (NAS)[120]
992Yes Telnet protocol over TLS/SSL
993YesAssigned Internet Message Access Protocol over TLS/SSL (IMAPS)[11]
994Reserved Previously assigned to Internet Relay Chat over TLS/SSL (IRCS), but was not used in common practice.
995Yes Post Office Protocol 3 over TLS/SSL (POP3S)[11]
1010Unofficial ThinLinc web-based administration interface[121]
1011–1020Reserved
1023 Reserved [2]
Unofficial z/OS Network File System (NFS) (potentially ports 991–1023)[78][79][122]

Registered ports

The range of port numbers from 1024 to 49151 (210 to 214 + 215 − 1) are the registered ports. They are assigned by IANA for specific service upon application by a requesting entity.[2] On most systems, registered ports can be used without superuser privileges.

Registered ports
Port TCP UDP SCTP DCCP Description
1024Reserved Reserved
1025Yes Teradata database management system (Teradata) server
1027 Reserved Reserved
Yes Native IPv6 behind IPv4-to-IPv4 NAT Customer Premises Equipment (6a44)[123]
1028Reserved[2]
1029Unofficial Microsoft DCOM services
1058Yes nim, IBM AIX Network Installation Manager (NIM)
1059Yes nimreg, IBM AIX Network Installation Manager (NIM)
1080Yes SOCKS proxy
1085Yes WebObjects[11]
1098Yes rmiactivation, Java remote method invocation (RMI) activation
1099YesAssigned rmiregistry, Java remote method invocation (RMI) registry
1109Reserved Reserved
1112Unofficial ESET virus updates[124]
1113Assigned
[note 2][125]		Yes[126] Licklider Transmission Protocol (LTP) delay tolerant networking protocol
1119Yes Battle.net chat/game protocol, used by Blizzard's games[127]
1167YesYesYes Cisco IP SLA (Service Assurance Agent)
1194Yes OpenVPN
1198Yes The cajo project Free dynamic transparent distributed computing in Java
1212Unofficial Equalsocial Fediverse protocol
1214Yes Kazaa
1220YesAssigned QuickTime Streaming Server administration[11]
1234 Yes Infoseek search agent
Unofficial VLC media player default port for UDP/RTP stream
1241Unofficial Nessus Security Scanner
1270Yes Microsoft System Center Operations Manager (SCOM) (formerly Microsoft Operations Manager (MOM)) agent
1293Yes Internet Protocol Security (IPSec)
1311 Yes Windows RxMon.exe
Unofficial Dell OpenManage HTTPS[128]
1314Unofficial Festival Speech Synthesis System server[129]
1319Yes AMX ICSP (Protocol for communications with AMX control systems devices)
1337 Yes Men&Mice DNS[130]
Unofficial Strapi[131]
Unofficial Sails.js default port[132]
1341Yes Qubes (Manufacturing Execution System)
1344Yes Internet Content Adaptation Protocol
1352Yes IBM Lotus Notes/Domino (RPC) protocol
1360Yes Mimer SQL
1414Yes IBM WebSphere MQ (formerly known as MQSeries)
1417Yes Timbuktu Service 1 Port
1418Yes Timbuktu Service 2 Port
1419Yes Timbuktu Service 3 Port
1420Yes Timbuktu Service 4 Port
1431Yes Reverse Gossip Transport Protocol (RGTP), used to access a General-purpose Reverse-Ordered Gossip Gathering System (GROGGS) bulletin board, such as that implemented on the Cambridge University's Phoenix system
1433Yes Microsoft SQL Server database management system (MSSQL) server
1434Yes Microsoft SQL Server database management system (MSSQL) monitor
1476Yes WiFi Pineapple Hak5.
1481Yes AIRS data interchange.
1492Unofficial Sid Meier's CivNet, a multiplayer remake of the original Sid Meier's Civilization game
1494Unofficial Citrix Independent Computing Architecture (ICA)[133]
1500Unofficial IBM Tivoli Storage Manager server[134]
1501Unofficial IBM Tivoli Storage Manager client scheduler[134]
1503Unofficial Windows Live Messenger (Whiteboard and Application Sharing)[135]
1512Yes Microsoft's Windows Internet Name Service (WINS)
1513Unofficial Garena game client
1521 Yes nCUBE License Manager
Unofficial Oracle database default listener, in future releases[136] official port 2483 (TCP/IP) and 2484 (TCP/IP with SSL)
1524Yes ingreslock, ingres
1527 Yes Oracle Net Services, formerly known as SQL*Net[137]
Unofficial Apache Derby Network Server[138]
1533Yes IBM Sametime Virtual Places Chat
1534NoUnofficial Eclipse Target Communication Framework[139]
1540Unofficial 1C:Enterprise server agent (ragent)[140][141]
1541Unofficial 1C:Enterprise master cluster manager (rmngr)[140]
1542Unofficial 1C:Enterprise configuration repository server[140]
1545Unofficial 1C:Enterprise cluster administration server (RAS)[140]
1547Yes Laplink
1550 Unofficial 1C:Enterprise debug server[140]
Unofficial Gadu-Gadu (direct client-to-client)
1560–1590Unofficial 1C:Enterprise cluster working processes[140]
1581 Yes MIL STD 2045-47001 VMF
Unofficial IBM Tivoli Storage Manager web client[134]
1582–1583Unofficial IBM Tivoli Storage Manager server web interface[134]
1583Unofficial Pervasive PSQL[142]
1589Yes Cisco VLAN Query Protocol (VQP)
1604Unofficial DarkComet remote administration tool (RAT)
1626Unofficial iSketch[143]
1627Unofficial iSketch[143]
1628Yes LonTalk normal
1629Yes LonTalk urgent
1645NoUnofficial Early deployment of RADIUS before RFC standardization was done using UDP port number 1645. Enabled for compatibility reasons by default on Cisco and Juniper Networks RADIUS servers.[144] Official port is 1812. TCP port 1645 must not be used.[145]
1646NoUnofficial Old radacct port, RADIUS accounting protocol. Enabled for compatibility reasons by default on Cisco and Juniper Networks RADIUS servers.[144] Official port is 1813. TCP port 1646 must not be used.[145]
1666Unofficial Perforce[146]
1677Yes Novell GroupWise clients in client/server access mode
1688Unofficial Microsoft Key Management Service (KMS) for Windows Activation[147]
1701 Yes Layer 2 Forwarding Protocol (L2F)
AssignedYes Layer 2 Tunneling Protocol (L2TP)[11]
1707 Yes Windward Studios games (vdmplay)
Unofficial L2TP/IPsec, for establish an initial connection[148]
1714–1764Unofficial KDE Connect[149]
1716Unofficial America's Army, a massively multiplayer online game (MMO)[150]
1719Yes H.323 registration and alternate communication
1720Yes H.323 call signaling
1723YesAssigned Point-to-Point Tunneling Protocol (PPTP)[11]
1755Yes Microsoft Media Services (MMS, ms-streaming)
1761Unofficial Novell ZENworks[151][152]
1776Yes Emergency management information system
1783Reserved "Decomissioned [sic] Port 04/14/00, ms"[2]
1801Yes Microsoft Message Queuing
1812Yes RADIUS authentication protocol, radius
1813Yes RADIUS accounting protocol, radius-acct
1863Yes Microsoft Notification Protocol (MSNP), used by the Microsoft Messenger service and a number of instant messaging Messenger clients
1880Unofficial Node-RED[153]
1883Yes MQTT (formerly MQ Telemetry Transport)
1900AssignedYes Simple Service Discovery Protocol (SSDP),[11] discovery of UPnP devices
1935 Yes Macromedia Flash Communications Server MX, the precursor to Adobe Flash Media Server before Macromedia's acquisition by Adobe on December 3, 2005
Unofficial Real Time Messaging Protocol (RTMP), primarily used in Adobe Flash[154]
1965UnofficialNo Gemini, a lightweight, collaboratively designed protocol, striving to fill the gap between Gopher and HTTP[155]
1967Unofficial Cisco IOS IP Service Level Agreements (IP SLAs) Control Protocol
1972Yes InterSystems Caché, and InterSystems IRIS versions 2020.3 and later
1984Yes Big Brother
Unofficial Arweave mining node[156]
1985AssignedYes Cisco Hot Standby Router Protocol (HSRP)[157]
1998Yes Cisco X.25 over TCP (XOT) service
2000Yes Cisco Skinny Client Control Protocol (SCCP)
2010Unofficial Artemis: Spaceship Bridge Simulator[158]
2033Unofficial Civilization IV multiplayer[159]
2049YesYesYes Network File System (NFS)[11]
2056Unofficial Civilization IV multiplayer[159]
2080Yes Autodesk NLM (FLEXlm)
2082Unofficial cPanel default[160]
2083 Yes Secure RADIUS Service (radsec)
Unofficial cPanel default SSL[160]
2086 Yes GNUnet
Unofficial WebHost Manager default[160]
2087Unofficial WebHost Manager default SSL[160]
2095Yes cPanel default web mail[160]
2096Unofficial cPanel default SSL web mail[160]
2100Unofficial Warzone 2100 multiplayer
2101Unofficial Networked Transport of RTCM via Internet Protocol (NTRIP)
2102Yes Zephyr Notification Service server
2103Yes Zephyr Notification Service serv-hm connection
2104Yes Zephyr Notification Service hostmanager
2123Yes GTP control messages (GTP-C)
2142Yes TDMoIP (TDM over IP)
2152Yes GTP user data messages (GTP-U)
2159Yes GDB remote debug port
2181 Yes EForward-document transport system
Unofficial Apache ZooKeeper default client port
2195Unofficial Apple Push Notification Service, binary, gateway.[11][161] Deprecated March 2021.[162]
2196Unofficial Apple Push Notification Service, binary, feedback.[11][161] Deprecated March 2021.[162]
2197Unofficial Apple Push Notification Service, HTTP/2, JSON-based API.
2210Yes NOAAPORT Broadcast Network
2211Yes EMWIN
2221Unofficial ESET anti-virus updates[124]
2222 Yes EtherNet/IP implicit messaging for IO data
Unofficial DirectAdmin Access[163]
2222–2226Yes ESET Remote administrator[124]
2240Yes General Dynamics Remote Encryptor Configuration Information Protocol (RECIPe)
2261Yes CoMotion master
2262Yes CoMotion backup
2302 Unofficial ArmA multiplayer[164]
Unofficial Halo: Combat Evolved multiplayer host[165]
2303 Unofficial ArmA multiplayer (default port for game +1)[164][166]
Unofficial Halo: Combat Evolved multiplayer listener[165]
2305Unofficial ArmA multiplayer (default port for game +3)[164]
2351Unofficial AIM game LAN network port
2368Unofficial Ghost (blogging platform)[167]
2369Unofficial Default for BMC Control-M/Server Configuration Agent
2370Unofficial Default for BMC Control-M/Server, to allow the Control-M/Enterprise Manager to connect to the Control-M/Server
2372Unofficial Default for K9 Web Protection/parental controls, content filtering agent
2375YesReserved Docker REST API (plain)
2376YesReserved Docker REST API (SSL)
2377YesReserved Docker Swarm cluster management communications[168]
2379 YesReserved CoreOS etcd client communication
Unofficial KGS Go Server[169]
2380YesReserved CoreOS etcd server communication
2389Assigned OpenView Session Mgr
2399Yes FileMaker Data Access Layer (ODBC/JDBC)
2401Yes CVS version control system password-based server
2404Yes IEC 60870-5-104, used to send electric power telecontrol messages between two systems via directly connected data circuits
2424Unofficial OrientDB database listening for binary client connections[170]
2427Yes Media Gateway Control Protocol (MGCP) media gateway
2447Yes ovwdb—OpenView Network Node Manager (NNM) daemon
2456Unofficial Valheim
2459Yes XRPL
2480Unofficial OrientDB database listening for HTTP client connections[170]
2483Yes Oracle database listening for insecure client connections to the listener, replaces port 1521
2484Yes Oracle database listening for SSL client connections to the listener
2500Unofficial NetFS communication[171]
2501Unofficial NetFS probe
2535Yes Multicast Address Dynamic Client Allocation Protocol (MADCAP).[172] All standard messages are UDP datagrams.[173]
2541Yes LonTalk/IP
2546–2548Yes EVault data protection services
2593Unofficial Ultima Online servers
2598Unofficial Citrix Independent Computing Architecture (ICA) with Session Reliability; port 1494 without session reliability[133]
2599Unofficial Ultima Online servers
2628Yes DICT[174]
2638Yes SQL Anywhere database server[175][176]
2710Unofficial XBT Tracker.[177] UDP tracker extension is considered experimental.[178]
2727Yes Media Gateway Control Protocol (MGCP) media gateway controller (call agent)
2775Yes Short Message Peer-to-Peer (SMPP)
2809Yes corbaloc:iiop URL, per the CORBA 3.0.3 specification
2811Yes gsi ftp, per the GridFTP specification
2827Unofficial I2P BOB Bridge[179]
2944Yes Megaco text H.248
2945Yes Megaco binary (ASN.1) H.248
2947Yes gpsd, GPS daemon
2948–2949Yes WAP push Multimedia Messaging Service (MMS)
2967Yes Symantec System Center agent (SSC-AGENT)
2989Yes Zarkov Intelligent Agent Communication[180]
3000 Unofficial Ruby on Rails development default[181]
Unofficial Meteor development default[182]
Unofficial Resilio Sync,[183] spun from BitTorrent Sync.
Unofficial Create React App, script to create single-page React applications[184]
Unofficial Gogs (self-hosted GIT service) [185]
Unofficial Grafana[186]
3001YesNo Honeywell Prowatch[187]
3004Unofficial iSync[11]
3010Yes KWS Connector
3020Yes Common Internet File System (CIFS). See also port 445 for Server Message Block (SMB), a dialect of CIFS.
3050Yes gds-db (Interbase/Firebird databases)
3052Yes APC PowerChute Network
3074Yes Xbox LIVE and Games for Windows – Live
3101Unofficial BlackBerry Enterprise Server communication protocol[188]
3128UnofficialNo Squid caching web proxy[189]
3225Yes Fibre Channel over IP (FCIP)
3233Yes WhiskerControl research control protocol
3260Yes iSCSI
3268Yes msft-gc, Microsoft Global Catalog (LDAP service which contains data from Active Directory forests)
3269Yes msft-gc-ssl, Microsoft Global Catalog over SSL (similar to port 3268, LDAP over SSL)
3283 Yes Net Assistant,[11] a predecessor to Apple Remote Desktop
Unofficial Apple Remote Desktop 2.0 or later[11]
3290Unofficial Virtual Air Traffic Simulation (VATSIM) network voice communication
3305Yes Odette File Transfer Protocol (OFTP)
3306YesAssigned MySQL database system[11]
3323Unofficial DECE GEODI Server
3332Unofficial Thundercloud DataPath Overlay Control
3333 Unofficial Eggdrop, an IRC bot default port[190]
Unofficial Network Caller ID server
Unofficial CruiseControl.rb[191]
Unofficial OpenOCD (gdbserver)[192]
3344Unofficial Repetier-Server
3351Unofficial Pervasive PSQL[142]
3386Yes GTP' 3GPP GSM/UMTS CDR logging protocol
3389Yes Microsoft Terminal Server (RDP) officially registered as Windows Based Terminal (WBT)[193]
3396Yes Novell NDPS Printer Agent
3412Yes xmlBlaster
3423Yes Xware xTrm Communication Protocol
3424Yes Xware xTrm Communication Protocol over SSL
3435Yes Pacom Security User Port
3455Yes Resource Reservation Protocol (RSVP)
3478 Yes STUN, a protocol for NAT traversal[194]
Yes TURN, a protocol for NAT traversal[195] (extension to STUN)
Yes STUN Behavior Discovery.[196] See also port 5349.
3478-3481Unofficial Microsoft Teams[197]
3479Unofficial PlayStation Network[198]
3480Unofficial PlayStation Network[198]
3483 Yes Slim Devices discovery protocol
Yes Slim Devices SlimProto protocol
3493Yes Network UPS Tools (NUT)
3503Yes MPLS LSP-echo Port
3516Yes Smartcard Port
3527Yes Microsoft Message Queuing
3535Unofficial SMTP alternate[199]
3544Yes Teredo tunneling
3551Yes Apcupsd Information Port [200]
3601Yes SAP Message Server Port[201]
3632YesAssigned Distcc, distributed compiler[11]
3645Yes Cyc
3655Yes Advanced Systems Concepts, Inc. ActiveBatch Exec Agent[202]
3659 Yes Apple SASL, used by macOS Server Password Server[11]
Unofficial Battlefield 4
3667Yes Information Exchange
3671Yes KNXnet/IP(EIBnet/IP)
3689YesAssigned Digital Audio Access Protocol (DAAP), used by Apple's iTunes and AirPlay[11]
3690Yes Subversion (SVN)[11] version control system
3702Yes Web Services Dynamic Discovery (WS-Discovery), used by various components of Windows Vista and later
3721Unofficial ES File Explorer FTP server
3724 Yes Some Blizzard games[127]
Unofficial Club Penguin Disney online game for kids
3725Yes Netia NA-ER Port
3749Yes CimTrak registered port
3768Yes RBLcheckd server daemon
3784Yes Bidirectional Forwarding Detection (BFD)for IPv4 and IPv6 (Single Hop) (RFC 5881)
3785Unofficial VoIP program used by Ventrilo
3799Yes RADIUS change of authorization
3804Yes Harman Professional HiQnet protocol
3825Unofficial RedSeal Networks client/server connection
3826 Yes WarMUX game server
Unofficial RedSeal Networks client/server connection
3835Unofficial RedSeal Networks client/server connection
3830Yes System Management Agent, developed and used by Cerner to monitor and manage solutions
3856Unofficial ERP Server Application used by F10 Software
3880Yes IGRS
3868YesYes Diameter base protocol (RFC 3588)
3872Yes Oracle Enterprise Manager Remote Agent
3900Yes udt_os, IBM UniData UDT OS[203]
3960Unofficial Warframe online interaction
3962Unofficial Warframe online interaction
3978Unofficial OpenTTD game (masterserver and content service)
3978Unofficial Palo Alto Networks' Panorama management of firewalls and log collectors & pre-PAN-OS 8.0 Panorama-to-managed devices software updates.[204]
3979Unofficial OpenTTD game
3999Yes Norman distributed scanning service
4000Unofficial Diablo II game
4001 Unofficial Microsoft Ants game
Unofficial CoreOS etcd client communication
4018Yes Protocol information and warnings
4035Unofficial IBM Rational Developer for System z Remote System Explorer Daemon
4045Unofficial Solaris lockd NFS lock daemon/manager
4050Unofficial Mud Master Chat protocol (MMCP) - Peer-to-peer communications between MUD clients.[205]
4069Yes Minger Email Address Verification Protocol[206]
4070Unofficial Amazon Echo Dot (Amazon Alexa) streaming connection with Spotify[207]
4089Yes OpenCORE Remote Control Service
4090Yes Kerio
4093Yes PxPlus Client server interface ProvideX
4096Yes Ascom Timeplex Bridge Relay Element (BRE)
4105Yes Shofar (ShofarNexus)
4111YesAssigned Xgrid[11]
4116Yes Smartcard-TLS
4123AssignedYes Z-Wave Protocol[208]
4125Unofficial Microsoft Remote Web Workplace administration
4172Yes Teradici PCoIP
4190Yes ManageSieve[209]
4195Yes AWS protocol for cloud remoting solution
4197Yes Harman International's HControl protocol for control and monitoring of Audio, Video, Lighting and Control equipment
4198Unofficial Couch Potato Android app[210]
4200Unofficial Angular app
4201Unofficial TinyMUD and various derivatives
4222Unofficial NATS server default port[211]
4226Unofficial Aleph One, a computer game
4242 Unofficial Orthanc – DICOM server[212]
Unofficial Quassel distributed IRC client
4243 Unofficial Docker implementations, redistributions, and setups default[213]
Unofficial CrashPlan
4244Unofficial Viber[214]
4303Yes Simple Railroad Command Protocol (SRCP)
4307Yes TrueConf Client - TrueConf Server media data exchange[215]
4321Yes Referral Whois (RWhois) Protocol[216]
4444 Unofficial Oracle WebCenter Content: Content Server—Intradoc Socket port. (formerly known as Oracle Universal Content Management).
Unofficial Metasploit's default listener port[217]
Unofficial Xvfb X server virtual frame buffer service
Unofficial OpenOCD (Telnet)[192]
4444–4445Unofficial I2P HTTP/S proxy
4486Yes Integrated Client Message Service (ICMS)
4488YesAssigned Apple Wide Area Connectivity Service, used by Back to My Mac[11]
4500AssignedYes IPSec NAT Traversal[11] (RFC 3947, RFC 4306)
4502–4534Yes Microsoft Silverlight connectable ports under non-elevated trust
4505–4506Unofficial Salt master
4534Unofficial Armagetron Advanced server default
4560Unofficial default Log4j socketappender port
4567Unofficial Sinatra default server port in development mode (HTTP)
4569Yes Inter-Asterisk eXchange (IAX2)
4604Yes Identity Registration Protocol
4605Yes Direct End to End Secure Chat Protocol
4610–4640Unofficial QualiSystems TestShell Suite Services
4662 Yes OrbitNet Message Service
Unofficial Default for older versions of eMule[218]
4664Unofficial Google Desktop Search
4672Unofficial Default for older versions of eMule[218]
4711Unofficial eMule optional web interface[218]
4713Unofficial PulseAudio sound server
4723Unofficial Appium open source automation tool
4724Unofficial Default bootstrap port to use on device to talk to Appium
4728Yes Computer Associates Desktop and Server Management (DMP)/Port Multiplexer[219]
4730Yes Gearman's job server
4739Yes IP Flow Information Export
4747Unofficial Apprentice
4753Yes SIMON (service and discovery)
4757Unofficial Select Studios Official Servers
4789Yes Virtual eXtensible Local Area Network (VXLAN)
4791Yes IP Routable RocE (RoCEv2)
4840Yes OPC UA Connection Protocol (TCP) and OPC UA Multicast Datagram Protocol (UDP) for OPC Unified Architecture from OPC Foundation
4843Yes OPC UA TCP Protocol over TLS/SSL for OPC Unified Architecture from OPC Foundation
4847Yes Web Fresh Communication, Quadrion Software & Odorless Entertainment
4848Unofficial Java, Glassfish Application Server administration default
4894Yes LysKOM Protocol A[220]
4944NoUnofficial DrayTek DSL Status Monitoring[221]
4949Yes Munin Resource Monitoring Tool
4950Yes Cylon Controls UC32 Communications Port
5000 Unofficial UPnP—Windows network device interoperability
Unofficial VTun, VPN Software
Unofficial ASP.NET Core — Development Webserver
Unofficial FlightGear multiplayer[222]
Unofficial Synology Inc. Management Console, File Station, Audio Station
Unofficial Flask Development Webserver
Unofficial Heroku console access
Unofficial Docker Registry[223]
Unofficial AT&T U-verse public, educational, and government access (PEG) streaming over HTTP[224]
Unofficial High-Speed SECS Message Services
Unofficial 3CX Phone System Management Console/Web Client (HTTP)
Unofficial RidgeRun GStreamer Daemon (GSTD) [225]
Unofficial Apple's AirPlay Receiver[226]
5000–5500NoUnofficial League of Legends, a multiplayer online battle arena video game[227]
5001 Unofficial Slingbox and Slingplayer
Unofficial Iperf (Tool for measuring TCP and UDP bandwidth performance)
Unofficial Synology Inc. Secured Management Console, File Station, Audio Station
Unofficial 3CX Phone System Management Console/Web Client (HTTPS)
5002Unofficial ASSA ARX access control system[228]
5003YesAssigned FileMaker – name binding and transport[11]
5004YesYes Real-time Transport Protocol media data (RTP) (RFC 3551, RFC 4571)
5005YesYes Real-time Transport Protocol control protocol (RTCP) (RFC 3551, RFC 4571)
5007Unofficial Palo Alto Networks - User-ID agent
5010Yes Registered to: TelePath (the IBM FlowMark workflow-management system messaging platform)[229]
The TCP port is now used for: IBM WebSphere MQ Workflow
5011Yes TelePath (the IBM FlowMark workflow-management system messaging platform)[229]
5022Unofficial MSSQL Server Replication and Database mirroring endpoints[230]
5025Yes scpi-raw Standard Commands for Programmable Instruments
5029Unofficial Sonic Robo Blast 2 and Sonic Robo Blast 2 Kart servers
5031Unofficial AVM CAPI-over-TCP (ISDN over Ethernet tunneling)
5037Unofficial Android ADB server
5044Yes Standard port in Filebeats/Logstash implementation of Lumberjack protocol.
5048Yes Texai Message Service
5050Unofficial Yahoo! Messenger
5051Yes ita-agent Symantec Intruder Alert[231]
5060Yes Session Initiation Protocol (SIP)[11]
5061Yes[232] Session Initiation Protocol (SIP) over TLS
5062Yes Localisation access
5064Yes EPICS Channel Access server[233]
5065AssignedYes EPICS Channel Access repeater beacon[233]
5070UnofficialNo Binary Floor Control Protocol (BFCP)[234]
5080Unofficial List of telephone switches#NEC[NEC Phone System] NEC SV8100 and SV9100 MLC Phones Default iSIP Port
5084Yes EPCglobal Low Level Reader Protocol (LLRP)
5085Yes EPCglobal Low Level Reader Protocol (LLRP) over TLS
5090Unofficial 3CX Phone System 3CX Tunnel Protocol, 3CX App API, 3CX Session Border Controller
5093Yes SafeNet, Inc Sentinel LM, Sentinel RMS, License Manager, client-to-server
5099Yes SafeNet, Inc Sentinel LM, Sentinel RMS, License Manager, server-to-server
5104Unofficial IBM Tivoli Framework NetCOOL/Impact[235] HTTP Service
5121Unofficial Neverwinter Nights
5124Unofficial TorgaNET (Micronational Darknet)
5125Unofficial TorgaNET (Micronational Intelligence Darknet)
5150Yes ATMP Ascend Tunnel Management Protocol[236]
5151 Yes ESRI SDE Instance
Yes ESRI SDE Remote Start
5154Yes BZFlag
5172Yes PC over IP Endpoint Management[237]
5173Unofficial Vite
5190Yes AOL Instant Messenger protocol.[11] The chat app is defunct as of 15 December 2017.[238]
5198Unofficial EchoLink VoIP Amateur Radio Software (Voice)
5199Unofficial EchoLink VoIP Amateur Radio Software (Voice)
5200Unofficial EchoLink VoIP Amateur Radio Software (Information)
5201Unofficial Iperf3 (Tool for measuring TCP and UDP bandwidth performance)
5222YesReserved Extensible Messaging and Presence Protocol (XMPP) client connection[11][239][240]
5223 Unofficial Apple Push Notification Service[11][161]
Unofficial Extensible Messaging and Presence Protocol (XMPP) client connection over SSL
5228 Yes HP Virtual Room Service
Unofficial Google Play, Android Cloud to Device Messaging Service, Google Cloud Messaging
5235-5236Unofficial Firebase Cloud Messaging[241]
5242Unofficial Viber[214]
5243Unofficial Viber[214]
5246Yes Control And Provisioning of Wireless Access Points (CAPWAP) CAPWAP control[242]
5247Yes Control And Provisioning of Wireless Access Points (CAPWAP) CAPWAP data[242]
5269Yes Extensible Messaging and Presence Protocol (XMPP) server-to-server connection[11][239][240]
5280Yes Extensible Messaging and Presence Protocol (XMPP)[243]
5281Unofficial Extensible Messaging and Presence Protocol (XMPP)[244]
5298Yes Extensible Messaging and Presence Protocol (XMPP)[245]
5310AssignedYes Outlaws, a 1997 first-person shooter video game[246]
5318YesReserved Certificate Management over CMS[247]
5349 Yes STUN over TLS/DTLS, a protocol for NAT traversal[194]
Yes TURN over TLS/DTLS, a protocol for NAT traversal[195]
YesReserved STUN Behavior Discovery over TLS.[196] See also port 3478.
5351ReservedYes NAT Port Mapping Protocol and Port Control Protocol—client-requested configuration for connections through network address translators and firewalls
5353AssignedYes Multicast DNS (mDNS)[11]
5355Yes Link-Local Multicast Name Resolution (LLMNR), allows hosts to perform name resolution for hosts on the same local link (only provided by Windows Vista and Server 2008)
5357Unofficial Web Services for Devices (WSDAPI) (only provided by Windows Vista, Windows 7 and Server 2008)
5358Unofficial WSDAPI Applications to Use a Secure Channel (only provided by Windows Vista, Windows 7 and Server 2008)
5394Unofficial Kega Fusion, a Sega multi-console emulator[248][249]
5402Yes Multicast File Transfer Protocol (MFTP)[250]
5405Yes NetSupport Manager
5412Yes IBM Rational Synergy (Telelogic Synergy) (Continuus CM) Message Router
5413Yes Wonderware SuiteLink service
5417Yes SNS Agent
5421Yes NetSupport Manager
5432YesAssigned PostgreSQL[11] database system
5433Unofficial Bouwsoft file/webserver[251]
5445Unofficial Cisco Unified Video Advantage
5450Unofficial OSIsoft PI Server Client Access [252]
5457Unofficial OSIsoft PI Asset Framework Client Access [253]
5458Unofficial OSIsoft PI Notifications Client Access [254]
5480Unofficial VMware VAMI (Virtual Appliance Management Infrastructure)—used for initial setup of various administration settings on Virtual Appliances designed using the VAMI architecture.
5481Unofficial Schneider Electric's ClearSCADA (SCADA implementation for Windows) — used for client-to-server communication.[255]
5495Unofficial IBM Cognos TM1 Admin server
5498Unofficial Hotline tracker server connection
5499Unofficial Hotline tracker server discovery
5500 Unofficial Hotline control connection
Unofficial VNC Remote Frame Buffer RFB protocol—for incoming listening viewer
5501Unofficial Hotline file transfer connection
5517Unofficial Setiqueue Proxy server client for SETI@Home project
5550Unofficial Hewlett-Packard Data Protector
5554Unofficial Fastboot default wireless port
5555 Unofficial Oracle WebCenter Content: Inbound Refinery—Intradoc Socket port. (formerly known as Oracle Universal Content Management). Port though often changed during installation
Unofficial Freeciv versions up to 2.0, Hewlett-Packard Data Protector, McAfee EndPoint Encryption Database Server, SAP, Default for Microsoft Dynamics CRM 4.0, Softether VPN default port
Unofficial Wireless adb (Android Debug Bridge) control of an Android device over the network.
5556Yes Freeciv, Oracle WebLogic Server Node Manager[256]
5568Yes Session Data Transport (SDT), a part of Architecture for Control Networks (ACN)[257]
5601Unofficial Kibana[258]
5631Yes pcANYWHEREdata, Symantec pcAnywhere (version 7.52 and later[259])[260] data
5632Yes pcANYWHEREstat, Symantec pcAnywhere (version 7.52 and later) status
5656Unofficial IBM Lotus Sametime p2p file transfer
5666Unofficial NRPE (Nagios)
5667Unofficial NSCA (Nagios)
5670 Yes FILEMQ ZeroMQ File Message Queuing Protocol
Yes ZRE-DISC ZeroMQ Realtime Exchange Protocol (Discovery)
5671YesAssigned Advanced Message Queuing Protocol (AMQP)[261] over TLS
5672YesAssignedYes Advanced Message Queuing Protocol (AMQP)[261]
5678UnofficialNo n8n[262]
5683Yes Constrained Application Protocol (CoAP)
5684Yes Constrained Application Protocol Secure (CoAPs)
5693Unofficial Nagios Cross Platform Agent (NCPA)[263]
5701Unofficial Hazelcast default communication port[264]
5718Unofficial Microsoft DPM Data Channel (with the agent coordinator)
5719Unofficial Microsoft DPM Data Channel (with the protection agent)
5722Yes Microsoft RPC, DFSR (SYSVOL) Replication Service
5723Unofficial System Center Operations Manager[265]
5724Unofficial Operations Manager Console
5741Yes IDA Discover Port 1
5742Yes IDA Discover Port 2
5800 Unofficial VNC Remote Frame Buffer RFB protocol over HTTP
Unofficial ProjectWise Server[266]
5900 Yes Remote Frame Buffer protocol (RFB)
Unofficial Virtual Network Computing (VNC) Remote Frame Buffer RFB protocol[11][267]
5905Unofficial Windows service "C:\Program Files\Intel\Intel(R) Online Connect Access\IntelTechnologyAccessService.exe" that listens on 127.0.0.1
5931Yes AMMYY admin Remote Control
5938Unofficial TeamViewer remote desktop protocol[268]
5984Yes CouchDB database server
5985Yes Windows PowerShell Default psSession Port[269] Windows Remote Management Service (WinRM-HTTP)[270]
5986Yes Windows PowerShell Default psSession Port[269] Windows Remote Management Service (WinRM-HTTPS)[270]
5988–5989Yes CIM-XML (DMTF Protocol)[271]
6000–6063Yes X11—used between an X client and server over the network
6005 Unofficial Default for BMC Software Control-M/Server—Socket used for communication between Control-M processes—though often changed during installation
Unofficial Default for Camfrog chat & cam client
6009Unofficial JD Edwards EnterpriseOne ERP system JDENet messaging client listener
6050Unofficial Arcserve backup
6051Unofficial Arcserve backup
6086Yes Peer Distributed Transfer Protocol (PDTP), FTP like file server in a P2P network
6100 Unofficial Vizrt System
Unofficial Ventrilo authentication for version 3
6101Unofficial Backup Exec Agent Browser
6110Yes softcm, HP Softbench CM
6111Yes spc, HP Softbench Sub-Process Control
6112 Yes dtspcd, execute commands and launch applications remotely
Unofficial Blizzard's Battle.net gaming service and some games,[127] ArenaNet gaming service, Relic gaming service
Unofficial Club Penguin Disney online game for kids
6113Unofficial Club Penguin Disney online game for kids, Used by some Blizzard games[127]
6136Unofficial ObjectDB database server[272]
6159Yes ARINC 840 EFB Application Control Interface
6160Unofficial Veeam Installer Service
6161Unofficial Veeam vPower NFS Service
6162Unofficial Veeam Data Mover
6163Unofficial Veeam Hyper-V Integration Service
6164Unofficial Veeam WAN Accelerator
6165Unofficial Veeam WAN Accelerator Data Transfer
6167Unofficial Veeam Log Shipping Service
6170Unofficial Veeam Mount Server
6200Unofficial Oracle WebCenter Content Portable: Content Server (With Native UI) and Inbound Refinery
6201 Assigned Thermo-Calc Software AB: Management of service nodes in a processing grid for thermodynamic calculations
Unofficial Oracle WebCenter Content Portable: Admin
6225Unofficial Oracle WebCenter Content Portable: Content Server Web UI
6227Unofficial Oracle WebCenter Content Portable: JavaDB
6240Unofficial Oracle WebCenter Content Portable: Capture
6244Unofficial Oracle WebCenter Content Portable: Content Server—Intradoc Socket port
6255Unofficial Oracle WebCenter Content Portable: Inbound Refinery—Intradoc Socket port
6257Unofficial WinMX (see also 6699)
6260Unofficial planet M.U.L.E.
6262Unofficial Sybase Advantage Database Server
6343Yes SFlow, sFlow traffic monitoring
6346Yes gnutella-svc, gnutella (FrostWire, Limewire, Shareaza, etc.)
6347Yes gnutella-rtr, Gnutella alternate
6350Yes App Discovery and Access Protocol
6379Yes Redis key-value data store
6389Unofficial EMC CLARiiON
6432Yes PgBouncer—A connection pooler for PostgreSQL
6436Unofficial Leap Motion Websocket Server TLS
6437Unofficial Leap Motion Websocket Server
6443Yes Kubernetes API server [273]
6444Yes Sun Grid Engine Qmaster Service
6445Yes Sun Grid Engine Execution Service
6454Unofficial Art-Net protocol
6463–6472Unofficial Discord RPC[274]
6464Yes Port assignment for medical device communication in accordance to IEEE 11073-20701
6513Yes NETCONF over TLS
6514Yes Syslog over TLS[275]
6515Yes Elipse RPC Protocol (REC)
6516Unofficial Windows Admin Center
6543Unofficial Pylons project#Pyramid Default Pylons Pyramid web service port
6556Unofficial Check MK Agent
6566Yes SANE (Scanner Access Now Easy)—SANE network scanner daemon[276]
6560–6561Unofficial Speech-Dispatcher daemon
6571Unofficial Windows Live FolderShare client
6600 Yes Microsoft Hyper-V Live
Unofficial Music Player Daemon (MPD)
6601Yes Microsoft Forefront Threat Management Gateway
6602Yes Microsoft Windows WSS Communication
6619Yes odette-ftps, Odette File Transfer Protocol (OFTP) over TLS/SSL
6622Yes Multicast FTP
6626Yes Semaphore Messenger
6653YesAssigned OpenFlow
6660–6664Unofficial Internet Relay Chat (IRC)
6665–6669Yes Internet Relay Chat (IRC)
6679 Yes Osorno Automation Protocol (OSAUT)
Unofficial Internet Relay Chat (IRC) SSL (Secure Internet Relay Chat)—often used
6690Unofficial Synology Cloud station
6697Yes IRC SSL (Secure Internet Relay Chat)—often used
6699Unofficial WinMX (see also 6257)
6715Unofficial AberMUD and derivatives default port
6771Unofficial BitTorrent Local Peer Discovery
6783–6785Unofficial Splashtop Remote server broadcast
6801Yes ACNET Control System Protocol
6881–6887Unofficial BitTorrent beginning of range of ports used most often
6888 Yes MUSE
Unofficial BitTorrent continuation of range of ports used most often
6889–6890Unofficial BitTorrent continuation of range of ports used most often
6891–6900Unofficial BitTorrent continuation of range of ports used most often
6891–6900Unofficial Windows Live Messenger (File transfer)
6901 Unofficial Windows Live Messenger (Voice)
Unofficial BitTorrent continuation of range of ports used most often
6902–6968Unofficial BitTorrent continuation of range of ports used most often
6924Yes split-ping, ping with RX/TX latency/loss split
6935Yes EthoScan Service
6936Yes XenSource Management Service
6969 Yes acmsoda
Unofficial BitTorrent tracker
6970–6999 Unofficial BitTorrent end of range of ports used most often
Unofficial QuickTime Streaming Server[11]
6980Unofficial Voicemeeter VBAN network audio protocol[277]
7000 Unofficial Default for Vuze's built-in HTTPS Bittorrent tracker
Unofficial Avira Server Management Console
7001 Unofficial Avira Server Management Console
Unofficial Default for BEA WebLogic Server's HTTP server, though often changed during installation
7002Unofficial Default for BEA WebLogic Server's HTTPS server, though often changed during installation
7005Unofficial Default for BMC Software Control-M/Server and Control-M/Agent for Agent-to-Server, though often changed during installation
7006Unofficial Default for BMC Software Control-M/Server and Control-M/Agent for Server-to-Agent, though often changed during installation
7010Unofficial Default for Cisco AON AMC (AON Management Console)[278]
7022Unofficial Database mirroring endpoints[230]
7023Yes Bryan Wilcutt T2-NMCS Protocol for SatCom Modems
7025Unofficial Zimbra LMTP [mailbox]—local mail delivery
7047Unofficial Zimbra conversion server
7070Unofficial Real Time Streaming Protocol (RTSP), used by QuickTime Streaming Server. TCP is used by default, UDP is used as an alternate.[11]
7077Yes Development-Network Authentification-Protocol
7133Unofficial Enemy Territory: Quake Wars
7144Unofficial Peercast
7145Unofficial Peercast
7171Unofficial Tibia
7262Yes CNAP (Calypso Network Access Protocol)
7272Yes WatchMe - WatchMe Monitoring
7306Unofficial Zimbra mysql [mailbox]
7307Unofficial Zimbra mysql [logger]
7312Unofficial Sibelius License Server
7396Unofficial Web control interface for Folding@home v7.3.6 and later[279]
7400Yes RTPS (Real Time Publish Subscribe) DDS Discovery
7401Yes RTPS (Real Time Publish Subscribe) DDS User-Traffic
7402Yes RTPS (Real Time Publish Subscribe) DDS Meta-Traffic
7471Unofficial Stateless Transport Tunneling (STT)
7473Yes Rise: The Vieneo Province
7474Yes Neo4J Server webadmin[280]
7478Yes Default port used by Open iT Server.[281]
7542Yes Saratoga file transfer protocol[282][283]
7547Yes CPE WAN Management Protocol (CWMP) Technical Report 069
7575Unofficial Populous: The Beginning server
7624Yes Instrument Neutral Distributed Interface
7631Yes ERLPhase
7634Unofficial hddtemp—Utility to monitor hard drive temperature
7652–7654Unofficial I2P anonymizing overlay network
7655Unofficial I2P SAM Bridge Socket API
7656–7660Unofficial I2P anonymizing overlay network
7659Unofficial Polypheny User Interface (database system)
7670Unofficial BrettspielWelt BSW Boardgame Portal
7680Unofficial Delivery Optimization for Windows 10[284]
7687Yes Bolt database connection
7707–7708Unofficial Killing Floor
7717Unofficial Killing Floor
7777 Unofficial iChat server file transfer proxy[11]
Unofficial Oracle Cluster File System 2
Unofficial Windows backdoor program tini.exe default
Unofficial Just Cause 2: Multiplayer Mod Server
Unofficial Terraria default server
Unofficial San Andreas Multiplayer (SA-MP) default port server
Unofficial SCP: Secret Laboratory Multiplayer Server
7777-7788 Yes Common default Steam game server ports(Ark, L4D2, ect)
7777–7788Unofficial Unreal Tournament series default server
7831Unofficial Default used by Smartlaunch Internet Cafe Administration[285] software
7880Unofficial PowerSchool Gradebook Server
7890Unofficial Default that will be used by the iControl Internet Cafe Suite Administration software
7915Unofficial Default for YSFlight server[286]
7935Unofficial Fixed port used for Adobe Flash Debug Player to communicate with a debugger (Flash IDE, Flex Builder or fdb).[287]
7946Unofficial Docker Swarm communication among nodes[168]
7979Unofficial Used by SilverBluff Studios for communication between servers and clients.
7990Unofficial Atlassian Bitbucket (default port)
8000 Unofficial Commonly used for Internet radio streams such as SHOUTcast, Icecast[288] and iTunes Radio[11]
Unofficial DynamoDB Local[289]
Unofficial Django Development Webserver[290]
Unofficial Python 3 http.server[291]
8005 Unofficial Tomcat remote shutdown[11]
Unofficial PLATO ASCII protocol (RFC 600)
Unofficial Windows SCCM HTTP listener service[292]
8006 Unofficial Quest AppAssure 5 API[293]
UnofficialNo Proxmox Virtual Environment admin web interface[294]
8007Unofficial Quest AppAssure 5 Engine[293]
8007Yes Proxmox Backup Server admin web interface
8008 Unofficial Alternative port for HTTP. See also ports 80 and 8080.
Unofficial IBM HTTP Server administration default
Unofficial iCal, a calendar application by Apple[11]
UnofficialNo Matrix homeserver federation over HTTP[295]
8009Unofficial Apache JServ Protocol (ajp13)
8010UnofficialNo Buildbot web status page
8042Unofficial Orthanc – REST API over HTTP[212]
8061YesReserved Nikatron Device Protocol (nikatron-dev)
8069Unofficial OpenERP 5.0 XML-RPC protocol[296]
8070Unofficial OpenERP 5.0 NET-RPC protocol[296]
8074Yes Gadu-Gadu
8075Unofficial Killing Floor web administration interface
8080 Yes Alternative port for HTTP. See also ports 80 and 8008.
Unofficial Apache Tomcat[297]
Unofficial Atlassian JIRA applications[298]
8081Yes Sun Proxy Admin Service[299]
8088 Unofficial Asterisk management access via HTTP
Unofficial YARN ResourceManager Web UI[300]
8089 UnofficialNo Splunk daemon management[301]
Unofficial Fritz!Box automatic TR-069 configuration[302]
8090 Unofficial Atlassian Confluence[303]
Unofficial Coral Content Distribution Network (legacy; 80 and 8080 now supported)[304]
Unofficial Matrix identity server
8091Unofficial CouchBase web administration[305]
8092Unofficial CouchBase API[305]
8096Unofficial Emby and Jellyfin HTTP port[306]
8111Unofficial JOSM Remote Control
8112Unofficial PAC Pacifica Coin
8116Unofficial Check Point Cluster Control Protocol
8118Yes Privoxy—advertisement-filtering Web proxy
8123 Unofficial Polipo Web proxy
Unofficial Home Assistant Home automation
Unofficial BURST P2P[307]
8124Unofficial Standard BURST Mining Pool Software Port
8125Unofficial BURST Web Interface
8139Unofficial Puppet (software) Client agent
8140Yes Puppet (software) Master server
8172Unofficial Microsoft Remote Administration for IIS Manager[308]
8184Unofficial NCSA Brown Dog Data Access Proxy
8194–8195Yes Bloomberg Terminal[309]
8200 Unofficial GoToMyPC
Unofficial MiniDLNA media server Web Interface
8222Unofficial VMware VI Web Access via HTTP[310]
8236Unofficial jRCS listener for Rocket Software jBASE Remote Connectivity Server[311]
8243Yes HTTPS listener for Apache Synapse[312]
8245Unofficial Dynamic DNS for at least No-IP and DynDNS[313]
8280Yes HTTP listener for Apache Synapse[312]
8281Unofficial HTTP Listener for Gatecraft Plugin
8291Unofficial Winbox—Default on a MikroTik RouterOS for a Windows application used to administer MikroTik RouterOS[314]
8303Unofficial Teeworlds Server
8332Unofficial Bitcoin JSON-RPC server[315]
8333 Unofficial Bitcoin
Unofficial VMware VI Web Access via HTTPS[310]
8334Unofficial Filestash server (default) [316]
8337Unofficial VisualSVN Distributed File System Service (VDFS)[317]
8384Unofficial Syncthing web GUI
8388Unofficial Shadowsocks proxy server
8400Yes Commvault Communications Service (GxCVD, found in all client computers)
8401Yes Commvault Server Event Manager (GxEvMgrS, available in CommServe)
8403Yes Commvault Firewall (GxFWD, tunnel port for HTTP/HTTPS)
8443 Unofficial SW Soft Plesk Control Panel
Unofficial Apache Tomcat SSL
Unofficial Promise WebPAM SSL
Unofficial iCal over SSL[11]
Unofficial MineOs WebUi
8444Unofficial Bitmessage
Unofficial Chia[318]
8448Yes Matrix homeserver federation over HTTPS[295]
8484Unofficial MapleStory Login Server
8500Unofficial Adobe ColdFusion built-in web server[319]
8530Unofficial Windows Server Update Services over HTTP, when using the default role installation settings in Windows Server 2012 and later versions.[320][321]
8531Unofficial Windows Server Update Services over HTTPS, when using the default role installation settings in Windows Server 2012 and later versions.[320][321]
8555Unofficial Symantec DLP OCR Engine [322]
Unofficial Chia JSON-RPC server[323]
8580Unofficial Freegate, an Internet anonymizer and proxy tool[324]
8611-8614Yes Canon BubbleJet Network Protocol [325]
8629Unofficial Tibero database
8642Unofficial Lotus Notes Traveler auto synchronization for Windows Mobile and Nokia devices[326]
8691Unofficial Ultra Fractal, a fractal generation and rendering software application – distributed calculations over networked computers[327][328]
8765UnofficialNo Default port of a local GUN relay peer that the Internet Archive[329] and others use as a decentralized mirror for censorship resistance.[330]
8767Unofficial Voice channel of TeamSpeak 2,[331] a proprietary Voice over IP protocol targeted at gamers
8834Unofficial Nessus, a vulnerability scanner – remote XML-RPC web server[332]
8840Unofficial Opera Unite, an extensible framework for web applications[333][334]
8880 Yes Alternate port of CDDB (Compact Disc Database) protocol, used to look up audio CD (compact disc) information over the Internet.[335] See also port 888.
Unofficial IBM WebSphere Application Server SOAP connector[336]
8883Yes Secure MQTT (MQTT over TLS)[337][338]
8887Unofficial HyperVM over HTTP
8888 Unofficial HyperVM over HTTPS
UnofficialNo Freenet web UI (localhost only)
Unofficial Default for IPython[339] / Jupyter[340] notebook dashboards
Unofficial MAMP[341]
8889Unofficial MAMP[341]
8920Unofficial Jellyfin HTTPS port[306]
8983Unofficial Apache Solr[342]
8997Unofficial Alternate port for I2P Monotone Proxy[179]
8998Unofficial I2P Monotone Proxy[179]
8999Unofficial Alternate port for I2P Monotone Proxy[179]
9000 Unofficial SonarQube Web Server[343]
Unofficial ClickHouse default port
Unofficial DBGp
Unofficial SqueezeCenter web server & streaming
Unofficial UDPCast
Unofficial Play Framework web server[344]
Unofficial Hadoop NameNode default port
Unofficial PHP-FPM default port
Unofficial QBittorrent's embedded torrent tracker default port[345]
9001 Yes ETL Service Manager[346]
Unofficial Microsoft SharePoint authoring environment
Unofficial cisco-xremote router configuration
Unofficial Tor network default
Unofficial DBGp Proxy
Unofficial HSQLDB default port
9002Unofficial Newforma Server comms
9003Unofficial Xdebug default client port[347]
9006 Reserved[2]
Unofficial Tomcat in standalone mode[11]
9030Unofficial Tor often used
9042Unofficial Apache Cassandra native protocol clients
9043Unofficial WebSphere Application Server Administration Console secure
9050–9051Unofficial Tor (SOCKS-5 proxy client)
9060Unofficial WebSphere Application Server Administration Console
9080 Yes glrpc, Groove Collaboration software GLRPC
Unofficial WebSphere Application Server HTTP Transport (port 1) default
Unofficial Remote Potato by FatAttitude, Windows Media Center addon
Unofficial ServerWMC, Windows Media Center addon
9081Unofficial Zerto ZVM to ZVM communication
9090 Unofficial Prometheus metrics server
Unofficial Openfire Administration Console
Unofficial SqueezeCenter control (CLI)
Unofficial Cherokee Admin Panel
9091 Unofficial Openfire Administration Console (SSL Secured)
Unofficial Transmission (BitTorrent client) Web Interface
9092 Unofficial H2 (DBMS) Database Server
Unofficial Apache Kafka A Distributed Streaming Platform[348]
9100YesAssigned PDL Data Stream, used for printing to certain network printers[11]
9101Yes Bacula Director
9102Yes Bacula File Daemon
9103Yes Bacula Storage Daemon
9119Yes MXit Instant Messenger
9150Unofficial Tor Browser
9191Unofficial Sierra Wireless Airlink
9199Unofficial Avtex LLC—qStats
9200Unofficial Elasticsearch[349]—default Elasticsearch port
9217Unofficial iPass Platform Service
9293Unofficial Sony PlayStation RemotePlay[350]
9295Unofficial Sony PlayStation Remote Play Session creation communication port
9296Unofficial Sony PlayStation Remote Play
9897Unofficial Sony PlayStation Remote Play Video stream
9300Unofficial IBM Cognos BI
9303Unofficial D-Link Shareport Share storage and MFP printers
9306Yes Sphinx Native API
9309Unofficial Sony PlayStation Vita Host Collaboration WiFi Data Transfer[351]
9312Yes Sphinx SphinxQL
9332Unofficial Litecoin JSON-RPC server
9333Unofficial Litecoin
9339Unofficial Used by all Supercell games such as Brawl Stars and Clash of Clans, mobile freemium strategy video games
9389Yes adws, Microsoft AD DS Web Services, Powershell uses this port
9392UnofficialNo OpenVAS Greenbone Security Assistant web interface
9418Yes git, Git pack transfer service
9419Unofficial MooseFS distributed file system – master control port[352]
9420Unofficial MooseFS distributed file system – master command port[352]
9421Unofficial MooseFS distributed file system – master client port[352]
9422Unofficial MooseFS distributed file system – Chunkservers[352]
9425Unofficial MooseFS distributed file system – CGI server[352]
9443 Unofficial VMware Websense Triton console (HTTPS port used for accessing and administrating a vCenter Server via the Web Management Interface)
Unofficial NCSA Brown Dog Data Tilling Service
9535Yes mngsuite, LANDesk Management Suite Remote Control
9536Yes laes-bf, IP Fabrics Surveillance buffering function
9600NoUnofficial Factory Interface Network Service (FINS), a network protocol used by Omron programmable logic controllers
9669UnofficialNo VGG Image Search Engine VISE
9675Unofficial Spiceworks Desktop, IT Helpdesk Software
9676Unofficial Spiceworks Desktop, IT Helpdesk Software
9695Yes Content centric networking (CCN, CCNx)
9735Unofficial Bitcoin Lightning Network[353]
9785Unofficial Viber[214]
9800 Yes WebDAV Source
Unofficial WebCT e-learning portal
9875Unofficial Club Penguin Disney online game for kids
9898Unofficial Tripwire—File Integrity Monitoring Software[354]
9899Yes SCTP tunneling (port number used in SCTP packets encapsulated in UDP, RFC 6951)
9901Unofficial Banana for Apache Solr
9981Unofficial Tvheadend HTTP server (web interface)[355]
9982Unofficial Tvheadend HTSP server (Streaming protocol)[355]
9987UnofficialNo TeamSpeak 3 server default (voice) port (for the conflicting service see the IANA list)[356]
9993Unofficial ZeroTier Default port for ZeroTier
9997Unofficial Splunk port for communication between the forwarders and indexers
9999Unofficial Urchin Web Analytics
9999Unofficial Dash (cryptocurrency)[357]
10000 Yes Network Data Management Protocol (NDMP) Control stream for network backup and restore.
Unofficial BackupExec
Unofficial Webmin, Web-based Unix/Linux system administration tool (default port)
10000–20000NoUnofficial Used on VoIP networks for receiving and transmitting voice telephony traffic which includes Google Voice via the OBiTalk ATA devices as well as on the MagicJack and Vonage ATA network devices.[358]
10001Unofficial Ubiquiti UniFi access points broadcast to 255.255.255.255:10001 (UDP) to locate the controller(s)
10009Unofficial Crossfire, a multiplayer online First Person Shooter
10011UnofficialNo TeamSpeak 3 ServerQuery[356]
10022UnofficialNo TeamSpeak 3 ServerQuery over SSH
10024Unofficial Zimbra smtp [mta]—to amavis from postfix
10025Unofficial Zimbra smtp [mta]—back to postfix from amavis
10042Unofficial Mathoid server [359]
10050Yes Zabbix agent
10051Yes Zabbix trapper
10110Yes NMEA 0183 Navigational Data. Transport of NMEA 0183 sentences over TCP or UDP
10172Unofficial Intuit Quickbooks client
10200 Unofficial FRISK Software International's fpscand virus scanning daemon for Unix platforms[360]
Unofficial FRISK Software International's f-protd virus scanning daemon for Unix platforms[361]
10201–10204Unofficial FRISK Software International's f-protd virus scanning daemon for Unix platforms[361]
10212Yes GE Intelligent Platforms Proficy HMI/SCADA – CIMPLICITY WebView[362]
10308Unofficial Digital Combat Simulator Dedicated Server [363]
10346No TEKWorx Limited - interfaceIT board protocol
10468Unofficial Flyer - discovery protocol
10480Unofficial SWAT 4 Dedicated Server
10505Unofficial BlueStacks (android simulator) broadcast[364]
10514Unofficial TLS-enabled Rsyslog (default by convention)
10578UnofficialNo Skyrim Together multiplayer server for The Elder Scrolls V: Skyrim mod.
10800Unofficial Touhou fight games (Immaterial and Missing Power, Scarlet Weather Rhapsody, Hisoutensoku, Hopeless Masquerade and Urban Legend in Limbo)
10823Unofficial Farming Simulator 2011
10836Unofficial configurable-world-domination-game multiplayer server[365]
10891Unofficial Jungle Disk (this port is opened by the Jungle Disk Monitor service on the localhost)
10933YesNo Octopus Deploy Tentacle deployment agent[366]
11001 metasys ( Johnson Controls Metasys java AC control environment )
11100NoUnofficial Risk of Rain multiplayer server
11111Unofficial RiCcI, Remote Configuration Interface (Redhat Linux)
Yes random code
11112Yes ACR/NEMA Digital Imaging and Communications in Medicine (DICOM)
11211Unofficial memcached[11]
11214Unofficial memcached incoming SSL proxy
11215Unofficial memcached internal outgoing SSL proxy
11235Yes XCOMPUTE numerical systems messaging (Xplicit Computing)[367]
11311Unofficial Robot Operating System master
11371Yes OpenPGP HTTP key server
11753Unofficial OpenRCT2 multiplayer[368]
12000Unofficial CubeForm, Multiplayer SandBox Game
12012Unofficial Audition Online Dance Battle, Korea Server—Status/Version Check
12013Unofficial Audition Online Dance Battle, Korea Server
12035Unofficial Second Life, used for server UDP in-bound[369]
12043Unofficial Second Life, used for LSL HTTPS in-bound[370]
12046Unofficial Second Life, used for LSL HTTP in-bound[370]
12201Unofficial Graylog Extended Log Format (GELF)[371]
12222Yes Light Weight Access Point Protocol (LWAPP) LWAPP data (RFC 5412)
12223Yes Light Weight Access Point Protocol (LWAPP) LWAPP control (RFC 5412)
12307Unofficial Makerbot UDP Broadcast (client to printer) (JSON-RPC)[372]
12308Unofficial Makerbot UDP Broadcast (printer to client) (JSON-RPC)[372]
12345 Unofficial Cube World[373]
Unofficial Little Fighter 2
Unofficial NetBus remote administration tool (often Trojan horse).
12443Unofficial IBM HMC web browser management access over HTTPS instead of default port 443[374]
12489Unofficial NSClient/NSClient++/NC_Net (Nagios)
12975Unofficial LogMeIn Hamachi (VPN tunnel software; also port 32976)—used to connect to Mediation Server (bibi.hamachi.cc); will attempt to use SSL (TCP port 443) if both 12975 & 32976 fail to connect
13000–13050Unofficial Second Life, used for server UDP in-bound[375]
13008Unofficial Crossfire, a multiplayer online First Person Shooter
13075Yes Default[376] for BMC Software Control-M/Enterprise Manager Corba communication, though often changed during installation
13400Yes ISO 13400 Road vehicles — Diagnostic communication over Internet Protocol(DoIP)
13698Unofficial File-Transferer
13720Yes Symantec NetBackup—bprd (formerly VERITAS)
13721Yes Symantec NetBackup—bpdbm (formerly VERITAS)
13724Yes Symantec Network Utility—vnetd (formerly VERITAS)
13782Yes Symantec NetBackup—bpcd (formerly VERITAS)
13783Yes Symantec VOPIED protocol (formerly VERITAS)
13785Yes Symantec NetBackup Database—nbdb (formerly VERITAS)
13786Yes Symantec nomdb (formerly VERITAS)
14550Unofficial MAVLink Ground Station Port
14567Unofficial Battlefield 1942 and mods
14652Unofficial Repgen DoxBox reporting tool
14800Unofficial Age of Wonders III p2p port[377]
15000 Unofficial psyBNC
Unofficial Wesnoth
Unofficial Kaspersky Network Agent[378]
Unofficial Teltonika networks remote management system (RMS)
15009Unofficial Teltonika networks remote management system (RMS)
15010Unofficial Teltonika networks remote management system (RMS)
15441Unofficial ZeroNet fileserver
15567Unofficial Battlefield Vietnam and mods
15345Yes XPilot Contact
15672UnofficialNo RabbitMQ management plugin[379]
16000 Unofficial Oracle WebCenter Content: Imaging (formerly known as Oracle Universal Content Management). Port though often changed during installation
Unofficial shroudBNC
16080Unofficial macOS Server Web (HTTP) service with performance cache[380]
16200Unofficial Oracle WebCenter Content: Content Server (formerly known as Oracle Universal Content Management). Port though often changed during installation
16225Unofficial Oracle WebCenter Content: Content Server Web UI. Port though often changed during installation
16250Unofficial Oracle WebCenter Content: Inbound Refinery (formerly known as Oracle Universal Content Management). Port though often changed during installation
16261Unofficial Project Zomboid multiplayer. Additional sequential ports used for each player connecting to server.
16300Unofficial Oracle WebCenter Content: Records Management (formerly known as Oracle Universal Records Management). Port though often changed during installation
16384Unofficial CISCO Default RTP MIN
16384–16403Unofficial Real-time Transport Protocol (RTP), RTP Control Protocol (RTCP), used by Apple's iChat for audio and video[11]
16384–16387Unofficial Real-time Transport Protocol (RTP), RTP Control Protocol (RTCP), used by Apple's FaceTime and Game Center[11]
16393–16402Unofficial Real-time Transport Protocol (RTP), RTP Control Protocol (RTCP), used by Apple's FaceTime and Game Center[11]
16403–16472Unofficial Real-time Transport Protocol (RTP), RTP Control Protocol (RTCP), used by Apple's Game Center[11]
16400Unofficial Oracle WebCenter Content: Capture (formerly known as Oracle Document Capture). Port though often changed during installation
16567Unofficial Battlefield 2 and mods
16666Unofficial SITC Port for mobile web traffic
16677Unofficial SITC Port for mobile web traffic
17000Unofficial M17 - Digital RF voice and data protocol with Internet (UDP) gateways (reflectors).[381]
17011Unofficial Worms multiplayer
17224Yes Train Realtime Data Protocol (TRDP) Process Data, network protocol used in train communication.[2][382]
17225Yes Train Realtime Data Protocol (TRDP) Message Data, network protocol used in train communication.[2][383]
17333Unofficial CS Server (CSMS), default binary protocol port
17472 Yes Tanium Communication Port
17474Unofficial DMXControl 3 Network Discovery
17475Unofficial DMXControl 3 Network Broker
17500Yes Dropbox LanSync Protocol (db-lsp); used to synchronize file catalogs between Dropbox clients on a local network.
17777Unofficial SITC Port for mobile web traffic
18080UnofficialNo Monero P2P network communications
18081UnofficialNo Monero incoming RPC calls
18091Unofficial memcached Internal REST HTTPS for SSL
18092Unofficial memcached Internal CAPI HTTPS for SSL
18104Yes RAD PDF Service
18200Unofficial Audition Online Dance Battle, AsiaSoft Thailand Server status/version check
18201Unofficial Audition Online Dance Battle, AsiaSoft Thailand Server
18206Unofficial Audition Online Dance Battle, AsiaSoft Thailand Server FAM database
18300Unofficial Audition Online Dance Battle, AsiaSoft SEA Server status/version check
18301Unofficial Audition Online Dance Battle, AsiaSoft SEA Server
18306Unofficial Audition Online Dance Battle, AsiaSoft SEA Server FAM database
18333Unofficial Bitcoin testnet
18400Unofficial Audition Online Dance Battle, KAIZEN Brazil Server status/version check
18401Unofficial Audition Online Dance Battle, KAIZEN Brazil Server
18505Unofficial Audition Online Dance Battle R4p3 Server, Nexon Server status/version check
18506Unofficial Audition Online Dance Battle, Nexon Server
18605Unofficial X-BEAT status/version check
18606Unofficial X-BEAT
18676Unofficial YouView
19000 Unofficial Audition Online Dance Battle, G10/alaplaya Server status/version check
Unofficial JACK sound server
19001Unofficial Audition Online Dance Battle, G10/alaplaya Server
19132Unofficial Minecraft: Bedrock Edition multiplayer server[384]
19133Unofficial Minecraft: Bedrock Edition IPv6 multiplayer server[384]
19150Unofficial Gkrellm Server
19226Unofficial Panda Software AdminSecure Communication Agent
19294Unofficial Google Talk Voice and Video connections[385]
19295Unofficial Google Talk Voice and Video connections[385]
19302Unofficial Google Talk Voice and Video connections[385]
19531UnofficialNo systemd-journal-gatewayd[386]
19532UnofficialNo systemd-journal-remote[387]
19788NoYes Mesh Link Establishment protocol for IEEE 802.15.4 radio mesh networks[388]
19812YesNo 4D database SQL Communication[389]
19813Yes 4D database Client Server Communication[389]
19814Yes 4D database DB4D Communication[389]
19999Yes Distributed Network Protocol—Secure (DNP—Secure), a secure version of the protocol used in SCADA systems between communicating RTU's and IED's
20000 Yes Distributed Network Protocol (DNP), a protocol used in SCADA systems between communicating RTU's and IED's
Yes OpenWebNet, communications protocol used in Bticino products
Unofficial Usermin, Web-based Unix/Linux user administration tool (default port)
Unofficial Used on VoIP networks for receiving and transmitting voice telephony traffic which includes Google Voice via the OBiTalk ATA devices as well as on the MagicJack and Vonage ATA network devices.[358]
20560Unofficial Killing Floor
20582Unofficial HW Development IoT comms
20583Unofficial HW Development IoT comms
20595Unofficial 0 A.D. Empires Ascendant
20808Unofficial Ableton Link
21025Unofficial Starbound Server (default), Starbound
21064Unofficial Default Ingres DBMS server
22000Unofficial Syncthing (default)
22136Unofficial FLIR Systems Camera Resource Protocol
22222Unofficial Davis Instruments, WeatherLink IP
23073Unofficial Soldat Dedicated Server
23399Unofficial Skype default protocol
23513Unofficial Duke Nukem 3D source ports
24441Unofficial Pyzor spam detection network
24444Unofficial NetBeans integrated development environment
24465Yes Tonido Directory Server for Tonido which is a Personal Web App and P2P platform
24554Yes BINKP, Fidonet mail transfers over TCP/IP
24800Unofficial Synergy: keyboard/mouse sharing software
24842Unofficial StepMania: Online: Dance Dance Revolution Simulator
25565 Unofficial Minecraft (Java Edition) multiplayer server[390][391]
Unofficial Minecraft (Java Edition) multiplayer server query[392]
25575Unofficial Minecraft (Java Edition) multiplayer server RCON[393]
25600-25700Unofficial SamsidParty Operational Ports
25734-25735Unofficial SOLIDWORKS SolidNetworkLicense Manager[394]
25826Unofficial collectd default port[395]
26000 Yes id Software's Quake server
Unofficial EVE Online
Unofficial Xonotic, an open-source arena shooter
26822Unofficial MSI MysticLight
26900–26901Unofficial EVE Online
26909–26911Unofficial Action Tanks Online
27000Unofficial PowerBuilder SySAM license server
27000–27006Unofficial id Software's QuakeWorld master server
27000–27009Yes FlexNet Publisher's License server (from the range of default ports)
27000–27015NoUnofficial Steam (game client traffic)[396]
27015NoUnofficial GoldSrc and Source engine dedicated server port[396]
27015–27018Unofficial Unturned, a survival game
27015–27030 NoUnofficial Steam (matchmaking and HLTV)[396]
Unofficial Steam (downloads)[396]
27016Unofficial Magicka and Space Engineers server port
27017UnofficialNo MongoDB daemon process (mongod) and routing service (mongos)[397]
27031–27035NoUnofficial Steam (In-Home Streaming)[396]
27036Unofficial Steam (In-Home Streaming)[396]
27374Unofficial Sub7 default.
27500–27900Unofficial id Software's QuakeWorld
27888Unofficial Kaillera server
27901–27910Unofficial id Software's Quake II master server
27950Unofficial OpenArena outgoing
27960–27969Unofficial Activision's Enemy Territory and id Software's Quake III Arena, Quake III and Quake Live and some ioquake3 derived games, such as Urban Terror (OpenArena incoming)
28000Yes Siemens Digital Industries Software license server[2]
28001Unofficial Starsiege: Tribes
28015Unofficial Rust (video game)[398]
28016Unofficial Rust (video game) RCON[399]
28200Assigned VoxelStorm game server
28260Unofficial Palo Alto Networks' Panorama HA-1 backup unencrypted sync port.[26]
28443Unofficial Palo Alto Networks' Panorama-to-managed devices software updates, PAN-OS 8.0 and later.[204]
28769Unofficial Palo Alto Networks' Panorama HA unencrypted sync port.[26]
28770Unofficial Palo Alto Networks' Panorama HA-1 backup sync port.[26]
28770–28771Unofficial AssaultCube Reloaded, a video game based upon a modification of AssaultCube
28785–28786Unofficial Cube 2: Sauerbraten[400]
28852Unofficial Killing Floor
28910Unofficial Nintendo Wi-Fi Connection[401]
28960Unofficial Call of Duty; Call of Duty: United Offensive; Call of Duty 2; Call of Duty 4: Modern Warfare Call of Duty: World at War (PC platform)[402]
29000Yes Siemens Digital Industries Software license server[2]
29070Unofficial Jedi Knight: Jedi Academy by Ravensoft
29900–29901Unofficial Nintendo Wi-Fi Connection[401]
29920Unofficial Nintendo Wi-Fi Connection[401]
30000 Unofficial XLink Kai P2P
Unofficial Minetest server default port[403]
Unofficial Foundry Virtual Tabletop server default port[404]
30003 Yes Yes Amicon FPSU-IP Remote Administration
30004 Yes Yes Amicon FPSU-IP VPN
30033UnofficialNo TeamSpeak 3 File Transfer[356]
30120Unofficial Fivem (Default Port) GTA V multiplayer[405][391]
30564Unofficial Multiplicity: keyboard/mouse/clipboard sharing software
31337 Unofficial Back Orifice and Back Orifice 2000 remote administration tools[406][407]
Unofficial ncat, a netcat alternative[408]
31416Unofficial BOINC RPC[409]
31438Unofficial Rocket U2[410]
31457Yes TetriNET
32137Unofficial Immunet Protect (UDP in version 2.0,[411] TCP since version 3.0[412])
32400Yes Plex Media Server[413]
32764Unofficial A backdoor found on certain Linksys, Netgear and other wireless DSL modems/combination routers[414]
32887Unofficial Ace of Spades, a multiplayer FPS video game
32976Unofficial LogMeIn Hamachi, a VPN application; also TCP port 12975 and SSL (TCP 443).[415]
33434Yes traceroute
33848Unofficial Jenkins, a continuous integration (CI) tool[416][417]
34000Unofficial Infestation: Survivor Stories (formerly known as The War Z), a multiplayer zombie video game
34197NoUnofficial Factorio, a multiplayer survival and factory-building game[418]
35357Yes OpenStack Identity (Keystone) administration[419]
36330Unofficial Folding@home Control Port
37008Unofficial TZSP intrusion detection
40000Yes SafetyNET p – a real-time Industrial Ethernet protocol
41121Yes Tentacle Server[420] - Pandora FMS
41230AssignedYes Z-Wave Protocol over DTLS[421]
41794Yes Crestron Control Port[422] - Crestron Electronics
41795Yes Crestron Terminal Port[423] - Crestron Electronics
41796YesNo Crestron Secure Control Port[424] - Crestron Electronics
41797YesNo Crestron Secure Terminal Port[425] - Crestron Electronics
42081-42090Yes Zippin - Zippin Stores
42590-42595Yes Glue - MakePro X
42999 Yes Curiosity [426]
43110Unofficial ZeroNet web UI default port [427]
43594–43595Unofficial RuneScape[428]
44123AssignedUnofficial Z-Wave Secure Tunnel[429]
44405Unofficial Mu Online Connect Server
44818Yes EtherNet/IP explicit messaging
47808–47823Yes BACnet Building Automation and Control Networks (4780810 = BAC016 to 4782310 = BACF16)
48556Yes drive.web AC/DC Drive Automation and Control Networks [430]
48656Unofficial Brainy LAB Control Server
48657Unofficial Brainy LAB Control Server
49151Reserved Reserved[2]

Dynamic, private or ephemeral ports
See also: Ephemeral port

The range 49152–65535 (215 + 214 to 216 − 1) contains dynamic or private ports that cannot be registered with IANA.[431] This range is used for private or customized services, for temporary purposes, and for automatic allocation of ephemeral ports.

Dynamic, private or ephemeral ports
Port TCP UDP SCTP DCCP Description
49152–65535UnofficialNo Certificate Management over CMS[432]
49160Unofficial Palo Alto Networks' Panorama.[204]
51820NoUnofficial WireGuard protocol[433]
55555 No Used by mac OS 11 Big Sur and later.[434]
60000–61000NoUnofficial Range from which Mosh – a remote-terminal application similar to SSH – typically assigns ports for ongoing sessions between Mosh servers and Mosh clients.[435]
64738Unofficial Mumble[436]

Note
  1. TCP port 465 was originally assigned to allow the use of SMTP over SSL (SMTPS), but practical concerns meant that it was left unused and according to the registration rules at that time was subsequently revoked and eventually re-assigned for use by Cisco's URD protocol. Subsequently, port 587 was assigned as the SMTP submission port, but was initially in plaintext, with encryption eventually provided years later by the STARTTLS extension. At the same time, the subsequent adoption of the usage of 465 as an SSL-enabled SMTP submission port, even though that the original registration did not envision that usage and despite the fact that it was registered to another service has endured. Subsequently, RFC 8314, in a special exemption to the normal assignment process as defined by RFC 6335, has acknowledged the de-facto situation and has designated SMTP over TLS as an 'alternate usage assignment'.
  2. Deployment typically occurs only directly over UDP, but other underlying protocol layers which meet the requirements described in the specification are possible.

See also

[202]

References and notes
  1. "Service Name and Transport Protocol Port Number Registry". Internet Assigned Numbers Authority. Retrieved 8 October 2023.
  2. "Service Name and Transport Protocol Port Number Registry". The Internet Assigned Numbers Authority (IA).
  3. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01.
  4. Touch, Joe (August 2015). Recommendations on Using Assigned Transport Port Numbers. IETF. doi:10.17487/RFC7605. BCP 165. RFC 7605. Retrieved 2018-04-08.
  5. services(5) – Linux File Formats Manual. "... Port numbers below 1024 (so-called "low numbered" ports) can only be bound to by root ... Well-known port numbers specified by the IANA are normally located in this root-only space. ..."
  6. "Linux/net/ipv4/inet_connection_sock.c". LXR. Archived from the original on 2015-04-02. Retrieved 2015-01-17.
  7. Lottor, M. (November 1988). TCP Port Service Multiplexer (TCPMUX). IETF. pp. 1–2. doi:10.17487/RFC1078. RFC 1078. Retrieved 2016-09-28.
  8. Bressler, Rober; Guida, Richard; McKenzie, Alex (16 October 1972). Remote Job Entry Protocol. IETF. doi:10.17487/RFC0407. RFC 407. Retrieved 2018-04-08.
  9. Bierman, A.; Bucci, C.; Iddon, R. (August 2000). Remote Network Monitoring MIB Protocol Identifier Macros. IETF. doi:10.17487/RFC2896. RFC 2896. Retrieved 2018-07-13.
  10. Postel, J. (May 1983). Echo Protocol. IETF. p. 1. doi:10.17487/RFC0862. STD 20. RFC 862. Retrieved 2016-09-28.
  11. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19.
  12. Stewart, Randall R., ed. (September 2007). Stream Control Transmission Protocol. IETF. pp. 135–136. doi:10.17487/RFC4960. RFC 4960. Retrieved 2016-09-27.
  13. Postel, J. (May 1983). Discard Protocol. IETF. p. 1. doi:10.17487/RFC0863. STD 21. RFC 863. Retrieved 2016-10-07.
  14. "How to Configure the Ports Used for Wake On LAN". Microsoft TechNet. n.d. Archived from the original on 2016-09-27. Retrieved 2016-09-27. ... The default port for the wake-up transmission is UDP port 9. ...
  15. "systat and netstat". eTutorials. ... The ps -ef and netstat -a commands are bound to TCP ports 11 and 15, respectively.  ...
  16. Postel, J. (May 1983). Active Users. IETF. doi:10.17487/RFC0866. STD 24. RFC 866.
  17. Postel, J. (May 1983). Daytime Protocol. IETF. p. 1. doi:10.17487/RFC0867. STD 25. RFC 867. Retrieved 2016-09-27.
  18. Postel, J. (May 1983). Quote of the Day Protocol. IETF. p. 1. doi:10.17487/RFC0865. STD 23. RFC 865. Retrieved 2016-09-27.
  19. Nelson, Russell (June 1990). Message Send Protocol. IETF. p. 1. doi:10.17487/RFC1159. RFC 1159. Retrieved 2016-09-27.
  20. Nelson, Russell; Arnold, Geoff (April 1992). Message Send Protocol 2. IETF. pp. 3–4. doi:10.17487/RFC1312. RFC 1312. Retrieved 2016-09-27.
  21. Postel, J. (May 1983). Character Generator Protocol. IETF. p. 1. doi:10.17487/RFC0864. STD 22. RFC 864. Retrieved 2016-09-27.
  22. Postel, J. (June 1980). File Transfer Protocol specification. IETF. p. 57. doi:10.17487/RFC0765. RFC 765. IEN 149. Retrieved 2016-09-27.
  23. Postel, J.; Reynolds, J. (October 1985). File Transfer Protocol. IETF. p. 59. doi:10.17487/RFC0959. STD 9. RFC 959. Retrieved 2016-09-27.
  24. Postel, J.; Reynolds, J. (May 1983). Telnet Protocol Specification. IETF. p. 15. doi:10.17487/RFC0854. STD 8. RFC 854. Retrieved 2016-09-28.
  25. Postel, Jonathan B. (August 1982). Simple Mail Transfer Protocol. IETF. p. 44. doi:10.17487/RFC0821. STD 10. RFC 821. Retrieved 2016-09-28.
  26. Postel, J.; Harrenstien, K. (May 1983). Time Protocol. IETF. pp. 1–2. doi:10.17487/RFC0868. STD 26. RFC 868. Retrieved 2016-09-28.
  27. Postel, J. (August 1979). Internet Name Server. IETF. IEN 116. Retrieved 2016-09-28.
  28. Harrenstien, Ken; White, Vic (1982-03-01). NICNAME/WHOIS. IETF. p. 1. doi:10.17487/RFC0812. RFC 812. Retrieved 2016-09-28.
  29. Harrenstien, K.; Stahl, M.; Feinler, E. (October 1985). NICNAME/WHOIS. IETF. p. 2. doi:10.17487/RFC0954. RFC 954. Retrieved 2016-09-28.
  30. Daigle, Leslie (September 2004). WHOIS Protocol Specification. Ran Atkinson, Ken Harrenstien, Mary Stahl, Elizabeth Feinler. IETF. p. 2. doi:10.17487/RFC3912. RFC 3912. Retrieved 2016-09-28.
  31. Finseth, Craig A. (July 1993). An Access Control Protocol, Sometimes Called TACACS. IETF. p. 7. doi:10.17487/RFC1492. RFC 1492. Retrieved 2016-09-28.
  32. TACACS+ Team (15 April 2018). The TACACS+ Protocol. IETF. I-D opsawg-tacacs-10. Retrieved 2018-07-18.
  33. Malis, Andrew G. (May 1983). "IMP Logical Addressing Implementation Specification, report 5256" (PDF). BBN - Bolt Beranek and Newman Inc. Retrieved 2018-07-18.
  34. IBM Corp. (14 September 2002). "AIX 5.2 Communications Programming Concepts, Chapter 12. Xerox Network System". Retrieved 2018-07-25.
  35. Mockapetris, P. (November 1987). DNS Implementation and Specification. IETF. doi:10.17487/RFC1035. RFC 1035. Retrieved 2018-07-18.
  36. Reynolds, J.; Postel, J. (March 1990). Assigned Numbers. IETF. p. 9. doi:10.17487/RFC1060. RFC 1060. Retrieved 2018-07-24.
  37. Bennett, C. J. (January 1981). "A Simple NIFTP-Based Mail System". INDRA. Retrieved 2018-07-18.
  38. Sollins, Karen R. (1980-01-29). The TFTP Protocol. IETF. p. 6. IEN 133. Retrieved 2016-10-16.
  39. Sollins, K.R. (June 1981). TFTP Protocol (revision 2). Noel Chiappa, Bob Baldwin, Dave Clark, Steve Szymanski, Larry Allen, Geoff Cooper, Mike Greenwald, Liza Martin, David Reed. IETF. pp. 6, 14, 16. doi:10.17487/RFC0783. RFC 783. Retrieved 2016-10-16.
  40. Sollins, Karen R. (July 1992). The TFTP Protocol (Revision 2). IETF. pp. 4–5, 9, 10. doi:10.17487/RFC1350. STD 33. RFC 1350. Retrieved 2016-10-16.
  41. Anklesaria, Farhad; McCahill, M.; Lindner, Paul; Johnson, David; Torrey, Daniel; Alberti, Bob (March 1993). The Internet Gopher Protocol (a distributed document search and retrieval protocol). IETF. pp. 1, 4–5, 7, 11–13. doi:10.17487/RFC1436. RFC 1436. Retrieved 2016-10-16. ... This protocol assumes a reliable data stream; TCP is assumed. Gopher servers should listen on port 70 (port 70 is assigned to Internet Gopher by IANA). ...
  42. Braden, R. (1971-01-13). NETRJS: A third level protocol for Remote Job Entry. IETF. doi:10.17487/RFC0088. RFC 88. Retrieved 2016-10-16.
  43. Braden, R. (1977-11-22). NETRJS Protocol. IETF. p. 3. doi:10.17487/RFC0740. RFC 740. Retrieved 2016-10-16.
  44. Postel, Jon; Vernon, J. (January 1983). Assigned Numbers. IETF. p. 10. doi:10.17487/RFC0820. RFC 820. Retrieved 2016-10-16.
  45. Karrenstien, K. (1977-12-30). NAME/FINGER Protocol. IETF. p. 1. doi:10.17487/RFC0742. RFC 742. Retrieved 2016-10-16.
  46. Zimmerman, David Paul (December 1991). "Flow of events". The Finger User Information Protocol. IETF. p. 4. sec. 2.1. doi:10.17487/RFC1288. RFC 1288. Retrieved 2016-10-16. ... Finger is based on the Transmission Control Protocol, using TCP port 79 decimal ...
  47. Fielding, Roy T.; Reschke, Julian F., eds. (June 2014). Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing. IETF. pp. 11, 17, 19, 42–43, 50. doi:10.17487/RFC7230. RFC 7230. Retrieved 2016-10-16.
  48. Belshe, Mike; Peon, Roberto (May 2015). "Starting HTTP/2". In Thomson, Martin (ed.). Hypertext Transfer Protocol Version 2 (HTTP/2). IETF. p. 7. sec. 3. doi:10.17487/RFC7540. RFC 7540. Retrieved 2016-10-16. ... HTTP/2 uses the same "http" and "https" URI schemes used by HTTP/1.1. HTTP/2 shares the same default port numbers: 80 for "http" URIs and 443 for "https" URIs. ...
  49. Iyengar, J.; Thomson, M. QUIC: A UDP-Based Multiplexed and Secure Transport. IETF. I-D ietf-quic-transport. Retrieved 2018-07-25.
  50. Kohl, John; Neuman, B. Clifford (September 1993). "IP transport". The Kerberos Network Authentication Service (V5). IETF. pp. 81–82. sec. 8.2.1. doi:10.17487/RFC1510. RFC 1510. Retrieved 2016-10-16. ... When contacting a Kerberos server (KDC) ... the client shall send a UDP datagram containing only an encoding of the request to port 88 (decimal) at the KDC's IP address ...
  51. Neuman, Clifford; Yu, Tom; Hartman, Sam; Raeburn, Kenneth (July 2005). The Kerberos Network Authentication Service (V5). Acknowledgements to John Kohl et al. in section 11 "Acknowledgements", pages 121–122. IETF. pp. 102–103, 105. doi:10.17487/RFC4120. RFC 4120. Retrieved 2016-10-16. ... Kerberos servers (KDCs) supporting IP transports MUST accept TCP ... UDP requests and SHOULD listen for them on port 88 (decimal) ...
  52. Crispin, Mark (7 October 1977). SUPDUP Protocol. IETF. pp. 15. doi:10.17487/RFC0734. RFC 734. Retrieved 2019-09-24.
  53. Harrenstien, K.; Stahl, M.; Feinler, E. (October 1985). HOSTNAME SERVER. IETF. pp. 1. doi:10.17487/RFC953. RFC 953. Retrieved 2018-07-26.
  54. Cass, D. E.; Rose, M. T. (April 1986). ISO Transport Services on Top of the TCP. IETF. pp. 5, 8, 12–13, 23–24. doi:10.17487/RFC0983. RFC 983. Retrieved 2016-10-17. ... A TSAP server begins by LISTENing on TCP port 102. ...
  55. Rose, Marshall T.; Cass, Dwight E. (May 1987). ISO Transport Service on top of the TCP Version: 3. IETF. pp. 1, 13. doi:10.17487/RFC1006. STD 35. RFC 1006. Retrieved 2016-10-17. ... TCP port 102 is reserved for hosts which implement this standard. ...
  56. Hedberg, Roland; Pomes, Paul (September 1998). "Basic Operation". The CCSO Nameserver (Ph) Architecture. IETF. p. 4. sec. 2. doi:10.17487/RFC2378. RFC 2378. Retrieved 2016-10-17. ... Initially, the server host starts the Ph service by listening on TCP port 105. ...
  57. Postel, Jon (November 1982). The Remote User Telnet Service. IETF. p. 1. doi:10.17487/RFC0818. RFC 818. Retrieved 2016-10-17. ... the specific service of User Telnet may be accessed (on hosts that choose to provide it) by opening a connection to port 107 (153 octal). ...
  58. Butler, M.; Postel, J.; Chase, D.; Goldberger, J.; Reynolds, J. K. (February 1985). Post Office Protocol: Version 2. IETF. p. 1. doi:10.17487/RFC0937. RFC 937. Retrieved 2016-10-17. ... This protocol assumes a reliable data stream such as provided by TCP or any similar protocol. When TCP is used, the POP2 server listens on port 109 ...
  59. Rose, Marshall (November 1988). Post Office Protocol: Version 3. IETF. pp. 2, 13. doi:10.17487/RFC1081. RFC 1081. Retrieved 2016-10-17. ... the server host starts the POP3 service by listening on TCP port 110. ...
  60. Myers, John G.; Rose, Marshall T. (May 1996). Post Office Protocol - Version 3. IETF. pp. 3, 19. doi:10.17487/RFC1939. STD 53. RFC 1939. Retrieved 2016-10-17. ... the server host starts the POP3 service by listening on TCP port 110. ...
  61. St. Johns, Michael C. (February 1993). "Overview". Identification Protocol. Acknowledgement is given to Dan Bernstein in section 7, "Acknowledgements", page 8. IETF. p. 113. sec. 2. doi:10.17487/RFC1413. RFC 1413. Retrieved 2016-10-17. ... The Identification Protocol (a.k.a., "ident", a.k.a., "the Ident Protocol") ... listens for TCP connections on TCP port 113 (decimal). ...
  62. St. Johns, Michael C. (January 1985). Authentication Server. IETF. p. 1. doi:10.17487/RFC0931. RFC 931. Retrieved 2016-10-17. ... The Authentication Server Protocol provides a means to determine the identity of a user of a particular TCP connection. ... A server listens for TCP connections on TCP port 113 (decimal). ...
  63. Lottor, Mark K. (September 1984). Postel, Jon (ed.). Simple File Transfer Protocol. IETF. p. 1. doi:10.17487/RFC0931. RFC 913. Retrieved 2016-10-17. ... SFTP is used by opening a TCP connection to the remote hosts' SFTP port (115 decimal). ...
  64. Kantor, Brian; Lapsley, Phil (February 1986). Network News Transfer Protocol. IETF. pp. 5, 20–23. doi:10.17487/RFC0977. RFC 977. Retrieved 2016-10-17. ... NNTP specifies a protocol for the distribution, inquiry, retrieval, and posting of news articles ... When used via Internet TCP, the contact port assigned for this service is 119. ...
  65. Feather, Clive D.W. (October 2006). "Reading and Transit Servers". Network News Transfer Protocol (NNTP). Acknowledgements to NNTP Working Group (Russ Allbery, Ned Freed), Brian Kantor, Phil Lapsley et al.) in section 13, "Acknowledgements", pages 107–109. IETF. p. 21. sec. 3.4.1. doi:10.17487/RFC3977. RFC 3977. Retrieved 2016-10-17. ... Network News Transfer Protocol (NNTP) ... is used for the distribution, inquiry, retrieval, and posting of Netnews articles using a reliable stream-based mechanism. ... The official TCP port for the NNTP service is 119. ...
  66. "COM Fundamentals - Guide - COM Clients and Servers - Inter-Object Communications - Microsoft RPC". microsoft.com. Retrieved 2014-05-27.
  67. NetBIOS Working Group (March 1987). Protocol standard for a NetBIOS service on a TCP/UDP transport: Concepts and methods. Acknowledgements to Internet Activities Board's End-to-End Services Task Force et al. in section 2, "Acknowledgements", page 6. IETF. doi:10.17487/RFC1001. STD 19. RFC 1001. Retrieved 2016-10-17.
  68. NetBIOS Working Group (March 1987). Protocol standard for a NetBIOS service on a TCP/UDP transport: Detailed specifications. Acknowledgements to Internet Activities Board in section 2, "Acknowledgements", page 4. IETF. doi:10.17487/RFC1002. STD 19. RFC 1002. Retrieved 2016-10-17.
  69. Crispin, Mark R. (March 2003). INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1. IETF. doi:10.17487/RFC3501. RFC 3501. Retrieved 2016-10-17. ... The Internet Message Access Protocol ... allows a client to access and manipulate electronic mail messages on a server. ... The IMAP4rev1 protocol assumes a reliable data stream such as that provided by TCP. When TCP is used, an IMAP4rev1 server listens on port 143. ...
  70. DeSchon, A.; Braden, R. (August 1988). Background File Transfer Program (BFTP). IETF. pp. 4, 14, 20, 24. doi:10.17487/RFC1068. RFC 1068. Retrieved 2016-10-17. ... The BFTP program ... can be executed as a remotely-accessible service that can be reached via a Telnet connection to the BFTP well-known port (152). ...
  71. Davin, J.; Case, J.; Fedor, M.; Schoffstall, M. (November 1987). "The Authentication Protocol". Simple Gateway Monitoring Protocol. IETF. p. 10. sec. 4. doi:10.17487/RFC1028. RFC 1028. Retrieved 2016-10-17. ... This memo defines a simple application-layer protocol by which management information for a gateway may be inspected or altered by logically remote users. ... An authentication protocol entity responds to protocol messages received at UDP port 153 on the host with which it is associated. ...
  72. Lambert, M. (June 1988). PCMAIL: A distributed mail system for personal computers. IETF. p. 8. doi:10.17487/RFC1056. RFC 1056. Retrieved 2016-10-17. ... Pcmail is a distributed mail system providing mail service to an arbitrary number of users ... The TCP contact port for DMSP has been designated 158. ...
  73. Case, J.; Fedor, M.; Schoffstall, M.; Davin, C. (May 1990). "Protocol Specification". Simple Network Management Protocol (SNMP). Acknowledgements to IETF SNMP Extensions working group in section 6, "Acknowledgements", page 33. IETF. p. 15. sec. 4. doi:10.17487/RFC1157. RFC 1157. Retrieved 2016-10-17. ... A protocol entity receives messages at UDP port 161 on the host ... Messages which report traps should be received on UDP port 162 for further processing. ...
  74. "Understanding Simple Network Management Protocol (SNMP) Traps". Support. Cisco (published 2006-10-10). n.d. Archived from the original on 2016-10-17. Retrieved 2016-10-17.
  75. Packard, Keith (2004). X Display Manager Control Protocol (Version 1.1 ed.). The Open Group. Archived from the original on 2016-01-09. Retrieved 2016-10-17. ... The purpose of the X Display Manager Control Protocol (XDMCP) is to provide a uniform mechanism for an autonomous display to request login service from a remote host. ... When XDMCP is implemented on top of the Internet User Datagram Protocol (UDP), port number 177 is to be used. ...
  76. Rekhter, Yakov; Li, Tony; Hares, Susan, eds. (January 2006). A Border Gateway Protocol 4 (BGP-4). Acknowledgements to Kirk Lougheed et al. in section 2, "Acknowledgements", pages 6–7. IETF. pp. 8, 47–48, 51–52. doi:10.17487/RFC4271. RFC 4271. Retrieved 2016-10-17. ... BGP listens on TCP port 179. ...
  77. Hartmann, Hartmann (August 2014). Default Port for Internet Relay Chat (IRC) via TLS/SSL. IETF. p. 2. doi:10.17487/RFC7194. RFC 7194. Retrieved 2016-10-06. ... Although system port assignments exist for IRC traffic that is plain text (TCP/UDP port 194) or TLS/SSL encrypted (TCP/UDP port 994), it is common practice amongst IRC networks not to use them for reasons of convenience and general availability on systems where no root access is granted or desired. ...
  78. SNMP MUX Protocol and MIB. IETF. May 1991. p. 8. doi:10.17487/RFC1227. RFC 1227. Retrieved 2019-10-15. When using the TCP to provide the transport-backing for the SMUX protocol, the SNMP agent listens on TCP port 199.
  79. Bernstein, Daniel B. "Quick Mail Transfer Protocol (QMTP)". Retrieved 2018-04-18. ... A QMTP client connects to a QMTP server, as discussed in section 7, over a reliable stream protocol allowing transmission of 8-bit bytes. ... QMTP may be used on top of TCP. A QMTP-over-TCP server listens for TCP connections on port 209. ...
  80. "The Spartan Protocol Specification". 2021-03-24. Retrieved 2023-08-30. ... The default port for spartan URLs is 300, in reference to Battle of Thermopylae when 300 spartan soldiers stood ground against an invading Persian army. ...
  81. "Virus Alerts -- SecureCastFAQ". nai.com. Santa Clara, CA, USA: Network Associates, Inc., now McAfee. 2000. Archived from the original on 2000-03-03. Retrieved 2013-10-26.
  82. "RFC 1504 - Appletalk Update-Based Routing Protocol: Enhanced App". faqs.org. Retrieved 16 March 2015.
  83. steve (2005-07-12). "LDM Preinstallation Steps". LDM Reference. 6.13.6. Unidata. Archived from the original on 2018-11-21. Retrieved 2018-11-21. ... In order for the LDM system to send data to a downstream LDM, the firewall rules must allow incoming TCP connections to the port on which the LDM server is listening (the default is 388). ...
  84. "The Unidata LDM and Network Security". Unidata. Archived from the original on 2018-11-21. Retrieved 2018-11-21. ... Use of the LDM requires that any host listed in its access control list be allowed a TCP connection to port 388 on the localhost. If the localhost is behind a firewall, the firewall must allow TCP access to port 388. ...
  85. "Active Directory and Active Directory Domain Services Port Requirements". Microsoft TechNet (published 2014-03-28). n.d. Archived from the original on 2017-08-02. Retrieved 2017-08-02.
  86. Moore, Keith; Newman, Chris (January 2018). Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access. Internet Engineering Task Force. pp. 18–19. doi:10.17487/RFC8314. RFC 8314. Submissions Port Registration IANA has assigned an alternate usage of TCP port 465 in addition to the current assignment... Historically, port 465 was briefly registered as the "smtps" port. This registration made no sense, as the SMTP transport MX infrastructure has no way to specify a port, so port 25 is always used. As a result, the registration was revoked and was subsequently reassigned to a different service... Although STARTTLS on port 587 has been deployed, it has not replaced the deployed use of Implicit TLS submission on port 465.
  87. "Service Name and Transport Protocol Port Number Registry". Internet Assigned Numbers Authority.
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    • The computer used to connect to Remote Web Workplace must allow connections through TCP ports 80, 443, 987, and 3389.
    • Routers on Windows SBS 2008 must be configured to forward Internet traffic to TCP ports 80, 443, 987, and 3389.
    ...
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    ...
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