What is a Port?

Port
Protocol
Description

0
TCP, UDP
Reserved (technically illegal to use)

1
TCP, UDP
TCP Port Service Multiplexer.

5
TCP, UDP
Remote Job Entry.

7
TCP, UDP
ECHO

9
TCP, UDP
Discard – RFC 4340 & 4960

12
TCP
Dark Ages of Camelot game.

13
TCP, UDP
Daytime – RFC 867

14
[reserved]
[currently unassigned]

17
TCP, UDP
Quote of the day.

18
TCP, UDP
Message Send Protocol.

19
TCP, UDP
Character Generator (Chargen) – RFC 864

20
TCP, UDP
FTP – Data.

21
TCP, UDP
FTP – Control.

22
UDP
PCAnywhere.

22
TCP, UDP
SSH Remote Login Protocol.

23
UDP
Dungeon Siege II game.

23
TCP, UDP
Telnet

24
TCP, UDP
Private e-mail system.

25
TCP, UDP
SMTP port for sending e-mail, Final Fantasy XI game.

26
TCP
RSFTP

26
UDP
Dungeon Siege II game.

26
UDP
Dungeon Siege II game.

27
TCP, UDP
NSW User System FE.

30
TCP, UDP
Battlefield 1942, Ghost Recon 2, Splinter Cell: Chaos Theory, Splinter Cell: Pandora Tomorrow.

32

[currently unassigned]

33
TCP, UDP
Display Support Protocol.

35
TCP, UDP
Private print server.

37
TCP, UDP
Time – RFC 868

38
TCP, UDP
Route Access Protocol

39
UDP
Resource Location Protocol

40
TCP
Midnight Commander (sometimes).

42
TCP
City of Heroes game.

42
TCP, UDP
Nameserv (hostname server); WINS (Windows Internet Naming Service).

43
TCP, UDP
Whois

47
TCP, UDP
NI FTP

48
TCP, UDP
Default Audit Daemon.

49
TCP, UDP
TACACS (Login Host Protocol).

50
TCP
Dark Ages of Camelot game, Vodafone Sure Signal.

50
TCP, UDP
Remote Mail Checking Protocol.

51
TCP, UDP
IMP Logical Address Maintenance.

52
TCP, UDP
XNS (Xerox Network Services) Time Protocol.

53
TCP
Socom, Socom 2, Twisted Metal Black Online.

53
UDP
Lineage II.

53
TCP, UDP
DNS (Domain Name Service)

54
TCP, UDP
XNS (Xerox Network Services) clearinghouse.

57
TCP, UDP
Private terminal access.

58
TCP, UDP
XNS mail.

59
TCP, UDP
Private file service.

60

[currently unassigned]

63
TCP, UDP
whois++

64
TCP, UDP
CI (communications integrator).

65
TCP, UDP
TACACS-Database Service.

66
TCP, UDP
Oracle SQL*NET.

67
UDP
Apple NetBoot.

67
TCP, UDP
Bootstrap Protocol Server, DHCP

68
UDP
Apple NetBoot.

68
TCP, UDP
Bootstrap Protocol Client, DHCP

69
TCP, UDP
TFTP (Trivial File Transfer Protocol)

70
TCP, UDP
Gopher

75
TCP, UDP
Private dial out service.

79
TCP, UDP
Finger

80
TCP
Age of Empires III, Battlefield 2, Battlefield 2142, Call of Duty: World at War, Command & Conquer Generals/Red Alert 3/Zero Hour, Guild Wars, Lineage II, Need for Speed Carbon/Hot Pursuit 2/Most Wanted, Rainbow Six 3 Raven Shield/Lockdown/Vegas, Worms 4: Mayhem and others.

80
TCP, UDP
HTTP

81
TCP
HTTP

81
TCP, UDP
HOSTS2 Name Server.

82
TCP, UDP
XFER Utility.

84
TCP, UDP
Common Trace Facility.

87
TCP, UDP
Any private terminal link.

88
UDP
Xbox Live 360; NCAA 07 Football game.

88
TCP, UDP
Kerberos

89
TCP, UDP
SU/MIT Telnet Gateway.

90
TCP, UDP
DNSIX (DoD Network Security for Information Exchange) security attribute token map.

92
TCP, UDP
Network Printing Protocol.

93
TCP, UDP
Device Control Protocol.

95
TCP, UDP
SUPDUP

98
TCP
linuxconf.

98
TCP, UDP
TAC news.

103
TCP, UDP
Genesis Point-to-Point Trans Net; X.400 e-mail.

104
TCP, UDP
Digital Imaging and Communications in Medicine (aka DICOM)

106
TCP, UDP
3COM-TSMUX.

107
TCP, UDP
Remote Telnet Service.

108
TCP, UDP
SNA Gateway Access Server.

109
TCP, UDP
POP2 (Post Office Protocol version 2).

110
TCP, UDP
POP3 (Post Office Protocol version 3).

113
TCP, UDP
IDENT Authentication Service.

115
TCP, UDP
SFTP (Simple File Transfer Protocol).

118
TCP, UDP
SQL services.

119
TCP, UDP
NNTP (Network News Transfer Protocol).

120
TCP, UDP
CFDPTKT.

123
UDP
NTP (Network Time Protocol).

130
TCP, UDP
CISCO FNATIVE.

131
TCP, UDP
CISCO TNATIVE.

132
TCP, UDP
CISCO SYSMAINT.

135
TCP, UDP
Blaster worm.

137
TCP, UDP
NETBIOS name service.

138
TCP, UDP
NETBIOS datagram service.

139
TCP, UDP
NETBIOS session service.

143
TCP, UDP
IMAP (Internet Message Access Protocol).

149
TCP, UDP
AED 512 emulation service.

150
TCP, UDP
SQL-NET.

151
TCP, UDP
HEMS.

152
TCP, UDP
BFTP (Background File Transfer Program).

153
TCP, UDP
SGMP (Simple Gateway Monitoring Protocol).

154
TCP, UDP
NETSC.

156
TCP, UDP
SQL service.

158
TCP, UDP
PCMail server.

161
TCP, UDP
SNMP (Simple Net Management Protocol)

168
TCP, UDP
RSVD.

179
TCP, UDP
BGP (Border Gateway Protocol)

190
TCP, UDP
Gateway Access Control Protocol.

200
TCP, UDP
IBM System Resource Controller.

201
TCP, UDP
AppleTalk Routing Maintenance.

202
TCP, UDP
AppleTalk Name binding.

204
TCP, UDP
AppleTalk Echo.

206
TCP, UDP
AppleTalk Zone information.

213
TCP, UDP
IPX

217
TCP, UDP
dBase Unix.

219
TCP, UDP
Unisys ARP.

220
TCP, UDP
IMAP (Interactive Mail Access Protocol) v3

256
TCP, UDP
RAP.

258
TCP, UDP
Yak Winsock Personal Chat.

263
TCP, UDP
HDAP.

264
TCP, UDP
BGMP (Border Gateway Multicast Protocol).

280
TCP, UDP
HTTP-mgmt.

315
TCP, UDP
DPSI.

321
TCP, UDP
PIP

349
TCP, UDP
mftp.

363
TCP, UDP
RSVP tunnel.

366
TCP, UDP
ODMR (On-Demand Mail Relay).

376
TCP, UDP
Amiga Envoy Network Inquiry Protocol.

377
TCP, UDP
NEC Corporation.

378
TCP, UDP
NEC Corporation.

384
TCP, UDP
A remote network server system.

385
TCP, UDP
IBM application.

387
TCP, UDP
AppleTalk Update-Based Routing Protocol.

389
TCP
Microsoft NetMeeting 2.0 to 3.01

389
TCP, UDP
LDAP (Lightweight Directory Access Protocol).

391
TCP, UDP
SynOptics SNMP Relay Port.

396
TCP, UDP
Novell Netware over IP.

397
TCP, UDP
MPTN (Multi Protocol Trans. Net).

402
TCP, UDP
Genie Protocol.

406
TCP, UDP
IMSP (Interactive Mail Support Protocol).

413
TCP, UDP
SMSP (Storage Management Services Protocol).

420
TCP, UDP
SMPTE.

427
TCP, UDP
SLP (Service Location Protocol).

430
TCP, UDP
UTMPSD.

431
TCP, UDP
UTMPCD.

433
TCP, UDP
NNSP, part of Network News Transfer Protocol

443
TCP, UDP
HTTPS (Hypertext Transfer Protocol over TL/SSL)

443
TCP
Playstation network games, Battlefield 2142, Call of Duty: World at War, Medal of Honor: Rising Sun, Socom, Socom 2

443
UDP
Google Talk and Final Fantasy XI game.

444
TCP, UDP
SNPP (Simple Network Paging Protocol).

445
TCP, UDP
Microsoft DS.

458
TCP, UDP
Apple QuickTime.

464
TCP, UDP
Kerberos (set and change password).

465
TCP
Playstation Network, SCEA Game Servers.

465
UDP
IGMP over UDP for SSM.

465
TCP, UDP
SMTP protocol over TLS/SSL

511
TCP, UDP
PassGo.

514
UDP
Syslog

515
TCP, UDP
Printer spooler.

519
TCP, UDP
Unix time.

520
TCP
efs, extended file name server.

520
UDP
RIP (Routing Information Protocol).

525
TCP, UDP
Time server.

530
TCP, UDP
RPC (Remote Procedure Call)

531
TCP, UDP
Chat.

533
TCP, UDP
Emergency broadcasts.

545
TCP
Kerberos encrypted remote shell.

545
TCP, UDP
Apple Quick Time Server.

546
TCP, UDP
DHCP v6 Client.

547
TCP, UDP
DHCP v6 Server.

548
TCP
AFP (Apple Filing Protocol) over TCP

554
TCP, UDP
RTSP (Real Time Streaming Protocol)

555
TCP
Used by trojans and hackers to exploit vulnerabilities.

563
TCP, UDP
NNTPS (NNTP protocol over TSL/SSL) and SNEWS.

565
TCP, UDP
whoami.

568
TCP, UDP
Microsoft shuttle.

569
UDP
Delta Force II game.

584
TCP, UDP
Key Server.

585
TCP, UDP
IMAP4+SSL (de-registered on April 26, 2006)

587
TCP
SMTP

587
TCP, UDP
Submission – RFC 4409

619
TCP, UDP
Compaq EVM, Digital EVM.

636
TCP, UDP
LDAPS (Lightweight Directory Access Protocol over TLS/SSL)

666
TCP, UDP
Doom Id Software.

687
TCP, UDP
asipregistry.

711
TCP, UDP
Cisco TDP

799
TCP
ControlIT.

800
TCP, UDP
Mdbs-daemon

808
TCP
Microsoft Net.TCP Port Sharing Service.

902
TCP
Self documenting Telnet Door, VMware Server Console, Ideafarm Chat, ISS RealSecure Sensore.

989
TCP, UDP
FTP protocol, data, over TLS/SSL

990
TCP, UDP
FTP protocol, control, over TLS/SSL

992
TCP, UDP
Telnet protocol over TLS/SSL

993
TCP, UDP
IMAP 4 protocol over TLS/SSL

994
TCP, UDP
IRC protocol over TLS/SSL

995
TCP, UDP
POP3 protocol over TLS/SSL

1001
UDP
Tom Clancy’s H.A.W.X. game.

1010
TCP, UDP
surf; macOS X RPC-based services.

1025
TCP
ShopPro accounting software; IIS; NFS

1025
UDP
Windows RPC, network blackjack.

1026
TCP, UDP
Calendar Access Protocol.

1027
TCP
ICQ; IIS

1027
UDP
IPv6 behind NAT44 CPEs.

1060
TCP, UDP
POLESTAR.

1080
TCP, UDP
Socks Proxy.

1352
TCP, UDP
Lotus Notes.

1433
TCP
Video Insight IP Video Surveillance Server.

1433
TCP, UDP
Microsoft SQL Server

1434
TCP, UDP
Microsoft SQL Server database management system monitor.

1468
TCP, UDP
CSDM.

1477
TCP, UDP
Microsoft SNA Server.

1484
TCP, UDP
Confluent License Manager.

1502
TCP, UDP
Shiva.

1688
TCP
Key Management Service for Windows Activation

1701
TCP, UDP
Layer 2 Tunneling Protocol (L2TP)

1716
UDP
America’s Army game.

1723
TCP, UDP
PPTP (Point-to-Point Tunneling Protocol) and macOS Server VPN service.

1755
TCP, UDP
Microsoft NetShow & Media Server.

1800
TCP, UDP
Snom 320 SIP Phone and ANSYS-License manager.

1812
TCP, UDP
RADIUS

1817
TCP, UDP
RKB-OSCS.

1855
TCP, UDP
Fiorano RtrSvc.

1863
TCP, UDP
MSN Messenger

1900
UDP
Xbox 360 Media Center.

1900
TCP, UDP
SSDP and Universal PnP

1935
TCP, UDP
Macromedia Flash Communications Server
RTMP (Real Time Messaging Protocol)

1985
TCP, UDP
HSRP (Hot Standby Router Protocol).

1995
TCP, UDP
Cisco Perf-port.

1999
TCP, UDP
Cisco Identification port.

2000
TCP
Remote Anywhere; ICUII; iSpQ VideoChat; Lineage game.

2000
UDP
Cisco Identification port.

2000
TCP, UDP
Cisco SCCP; Remotely Anywhere.

2077
UDP
IRLP (Internet Radio Linking Project).

2077
TCP, UDP
Tivoli Storage Manager and TrelliSoft Agent.

2082
UDP
IRLP (Internet Radio Linking Project).

2082
TCP, UDP
Infowave Mobility Server.

2256
TCP, UDP
PCC MFP

2300
UDP
Dungeon Siege game.

2427
UDP
Cisco MGCP

2427
TCP, UDP
Media Gateway Control Protocol Gateway.

2556
TCP
Bagle backdoor virus (W32.Beagle).

2556
TCP, UDP
nicetec-nmsvc.

2701
TCP
KnowShowGo P2P

2701
TCP, UDP
SMS RCINFO.

2723
TCP
KnowShowGo P2P

2723
TCP, UDP
WatchDog NT protocol.

2900
UDP
Dungeons & Dragons Online and Lord of the Rings Online games.

3000
TCP
Mirilax License server, Cloud9 Integrated Development Environment server, Ruby on Rails development default, Meteor development default.

3000
UDP
BitTorrent Sync, distributed interactive simulation.

3001
TCP
Web100 NDT (network diagnostic tool).

3001
TCP, UDP
VidPhone.

3039
TCP, UDP
Cogitate, Inc.

3050
TCP, UDP
Borland Interbase database (gds_db).

3052
TCP, UDP
APC 3052, Powerchute.

3061
TCP, UDP
cautcpd.

3074
TCP, UDP
XBOX 360

3090
UDP
Rainbow Six: Vegas game.

3090
TCP, UDP
Senforce Sessions Services (stss); Rappore Session Services (rtss).

3101
TCP
BES (Blackberry Enterprise Server).

3101
UDP
Rainbow Six: Vegas game.

3101
TCP, UDP
HP PolicyXpert PIB Server.

3128
TCP
Active API server port, proxy server port, known Trojan and backdoor port.

3260
TCP
iSCSI target.

3268
TCP, UDP
Microsoft Global Catalog

3306
TCP
Caesar IV game.

3306
TCP, UDP
MySQL database server.

3350
UDP
Settlers 3 game.

3350
TCP, UDP
FINDVIATV.

3268
TcP, UDP
Microsoft Global Catalog

3269
Tcp, UDP
Microsoft Global Catalog on SSL

3389
TCP, UDP
Remote Desktop and Microsoft Terminal Services.

3525
TCP, UDP
EIS Server port.

3783
TCP
Gamespy

3784
TCP, UDP
Ventrilo and BFD Control Protocol.

4000
UDP
ICQ.

4000
TCP, UDP
Command & Conquer: Tiberian Sun and Dune 2000.

4006
TCP, UDP
pxc-spvr.

4062
TCP, UDP
Ice Location Service on SSL.

4373
TCP, UDP
Remote Authenticated Command Service.

4444
TCP, UDP
Oracle WebCenter Content.

4444
TCP, UDP
Xvfb X server virtual frame buffer service.

4567
TCP
Verizon Actiontec Routers (firmware monitoring and upgrading by Verizon FiOS).

4915

[currently unassigned]

4918

[currently unassigned]

4926

[currently unassigned]

5000
TCP
DINA DVR Server and Dwyco Video Conferencing.

5000
TCP, UDP
Universal Plug-and-Play (UPnP), AIM Video IM, and Yahoo Messenger Voice Chat.

5037

[currently unassigned]

5060
TCP, UDP
Session Initiation Protocol.

5190
TCP
America Online, AIM (AOL Instant Messenger), and ICQ.

5190
UDP
MSN Messenger.

5191
UDP
Neverwinter Nights 2 game.

5191
TCP, UDP
AOL 1, AOL Instant Messenger, and ICQ.

5192
UDP
Neverwinter Nights 2 game.

5192
TCP, UDP
AOL 2, AOL Instant Messenger, and ICQ.

5193
UDP
Neverwinter Nights 2 game.

5193
TCP, UDP
AOL 3, AOL Instant Messenger, and ICQ.

5200
TCP
Echolink.

5200
UDP
Neverwinter Nights 2 game.

5200
TCP, UDP
TARGUS GetData.

5252
UDP
Neverwinter Nights 2 game.

5252
TCP, UDP
Movaz SSC.

5314
TCP, UDP
opalis-rbt-ipc.

5353
UDP
iChat, MultiCast DNS, and macOS X Bonjour/Zeroconf port.

5424
TCP, UDP
Beyond Remote, W32.MyDoom worm

5445
UDP
Cisco Unified Video Advantage (not verified)

5445
TCP, UDP
Server Message Block over Remote Direct Memory Access (Microsoft).

5500
TCP
HotLine Peer-to-Peer (P2P) file sharing, MOHAA (Medal of Honor: Allied Assault), MatchWatch & Reverend, and VNC (Virtual Network Computing)

5500
UDP
SecurID.

5631
TCP, UDP
PCAnywhere.

5632
TCP
MOHAA (Medal of Honor: Allied Assault) Reverend.

5632
UDP
PCAnywhere.

5678
TCP
MOHAA (Medal of Honor: Allied Assault) Reverend.

5678
UDP
iChat.

5678
TCP, UDP
Linksys Cable/DSL Routers Remote Administration.

5687
TCP
MOHAA (Medal of Honor: Allied Assault) Reverend.

5749

[currently unassigned]

5800
TCP
VNC.

5801
TCP
VNC.

5900
TCP
VNC.

5901
TCP
VNC.

6000
UDP
Playstation 3, Everquest, Madden NFL 2005, Medal of Honor: Rising Sun.

6000
TCP, UDP
X Window

6062
TCP, UDP
X Windows System.

6073
UDP
Dungeon Siege game.

6084
TCP
Peer to Peer Infrastructure Protocol.

6086
TCP, UDP
PDTP P2P

6112
TCP, UDP
Battle.net

6113
TCP, UDP
Battle.net.

6114
TCP, UDP
Battle.net.

6115
TCP, UDP
Battle.net.

6116
TCP, UDP
Battle.net.

6117
TCP, UDP
Battle.net.

6118
TCP, UDP
Battle.net.

6119
TCP, UDP
Battle.net.

6421
TCP, UDP
NIM_WAN.

6500
TCP
GameSpy Arcade and Net2Phone registration.

6500
TCP, UDP
Games: Black & White, Civilization III, Civilization IV, Star Wars: Battlefront, Star Wars: Empire at War.

6542
TCP
irccd.exe service.

6553

[currently unassigned]

6667
UDP
Games: Neverwinter Nights, Rainbow Six 3: Raven Shield.

6667
TCP, UDP
MSN Game Zone; Star Wars: Empire at War game.

6801
TCP, UDP
Net2Phone; ACNet Control System Protocol.

7000
TCP
Games: Command & Conquer series, Dune 2000, Emperor: Battle for Dune, Everquest, Everquest 2

7070
TCP
Real Audio

7070
UDP
Games: City of Heroes, City of Villains.

7075
UDP
Real Audio, City of Heroes, City of Villains.

7900
TCP, UDP
Multicast Event.

8000
TCP
WinAmp Audio Streaming; X-Lite; Icecast and Internet radio streams using Shoutcast.

8000
UDP
Aliens vs. Predator game.

8000
TCP, UDP
iRDMI.

8008
TCP, UDP
HTTP alternative.

8080
TCP
EvoCam, Pirate Radio, WebcamXP, Unreal Tournament game.

8080
TCP, UDP
HTTP alternative.

8081
TCP
HTTP alternative and BlackICE ICEcap user console.

8081
TCP, UDP
Dreambox 8000

8084
TCP
IBM Lotus Sametime server and Apache Tomcat server.

8090
TCP
HTTP alternative and WebcamXP

8092
TCP,UDP
iTunes Radio Stream, EMC2 (Legato) Networker or Sun Solcitice Backup, QuickTime streaming.

8118
TCP
Privoxy.

8443
TCP, UDP
PCsync HTTPS, PCSync SSL; SW Soft Plesk Control Panel, Apache Tomcast SSL, and iCal service.

8547

[currently unassigned]

9000
UDP
Asheron’s Call game.

9010
UDP
Asheron’s Call game.

9011
UDP
Asheron’s Call game.

9012
UDP
Asheron’s Call game.

9013
UDP
Asheron’s Call game.

9090
TCP
Zeus admin server.

9090
TCP, UDP
WebSM.

9092
TCP, UDP
Xml-Ipc Server Reg; Championship Manager 4.

9100
TCP
Used to send raw data to a printer.

9339
TCP
Clash of Clans, a mobile freemium strategy video game.

9200
TCP
Elasticsearch-default Elasticsearch port.

9432

[currently unassigned]

10000
TCP, UDP
Network Data Management Protocol.

12345
TCP
Port used by Trend Micro antivirus program. Port 12345 is also commonly used by various Trojan viruses such as Netbus.

12468
TCP
VXtreme and WebTheater.

17770
UDP
Battlezone 2 game.

17771
TCP,UDP
Battlezone 2 game.

17772
UDP
Battlezone 2 game.

26000
TCP, UDP
Quake, Elite Force, Empire Earth 2, and QuakeWorld master server.

27015
TCP
Half-Life.

27900
TCP
Gamespy.

28900
TCP
Gamespy.

29900
TCP
Gamespy.

29901
TCP
Gamespy.

31337
TCP
Back orifice

33334
UDP
Empire Earth game.

33335
TCP
Empire Earth game.

43188
TCP, UDP
REACHOUT.