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Port Knowledgebase

List of frequently seen TCP and UDP ports and what they mean. The goal of this port table is to point to further resources for more information.

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0
1tcpmux
3
4
5rje
7echo
9discard
11systat
13daytime
15netstat
17qotd
18send/rwp
19chargen
20ftp-data
21ftp
27ETRN
29msg-icp
31msg-auth
33dsp
37time
38RAP
39rlp
40
41
42nameserv, WINS
43whois, nickname
49TACACS, Login Host Protocol
50RMCP, re-mail-ck
53DNS
59NFILE
63whois++
66sql*net
67bootps
68bootpd/dhcp
69Trivial File Transfer Protocol (tftp)
70Gopher
79finger
80www-http
87
88Kerberos, WWW
95supdup
96DIXIE
98linuxconf
101HOSTNAME
102ISO, X.400, ITOT
105cso
106poppassd
109POP2
110POP3
111Sun RPC Portmapper
113identd/auth
115sftp
116
117uucp
118
119NNTP
120CFDP
123NTP
124SecureID
129PWDGEN
133statsrv
135loc-srv/epmap
137netbios-ns
138netbios-dgm (UDP)
139NetBIOS
143IMAP
144NewS
150
152BFTP
153SGMP
156
161SNMP
175vmnet
177XDMCP
178NextStep Window Server
179BGP
180SLmail admin
199smux
210Z39.50
213
218MPP
220IMAP3
256
257
258
264FW1_topo
311Apple WebAdmin
350MATIP type A
351MATIP type B
360
363RSVP tunnel
366ODMR (On-Demand Mail Relay)
371
387AURP (AppleTalk Update-Based Routing Protocol)
389LDAP
407Timbuktu
427
434Mobile IP
443ssl
444snpp, Simple Network Paging Protocol
445SMB
458QuickTime TV/Conferencing
468Photuris
475
511
517talk
520RIP (Routing Information Protocol)
521RIPng
522ULS
531IRC
543KLogin, AppleShare over IP
545QuickTime
548AFP
554Real Time Streaming Protocol
555phAse Zero
563NNTP over SSL
575VEMMI
581Bundle Discovery Protocol
593MS-RPC
608SIFT/UFT
626Apple ASIA
631IPP (Internet Printing Protocol)
635mountd
636sldap
642EMSD
648RRP (NSI Registry Registrar Protocol)
655tinc
660Apple MacOS Server Admin
666Doom
674ACAP
687AppleShare IP Registry
700buddyphone
705AgentX for SNMP
901swat, realsecure
993s-imap
995s-pop
999
1024
1025
1050
1062Veracity
1080SOCKS
1085WebObjects
1100
1105
1114
1227DNS2Go
1234
1243SubSeven
1338Millennium Worm
1352Lotus Notes
1381Apple Network License Manager
1417Timbuktu
1418Timbuktu
1419Timbuktu
1420
1433Microsoft SQL Server
1434Microsoft SQL Monitor
1477
1478
1490
1494Citrix ICA, MS Terminal Server
1498
1500
1503T.120
1521Oracle SQL
1522
1524
1525prospero
1526prospero
1527tlisrv
1529
1547
1604Citrix ICA, MS Terminal Server
1645RADIUS Authentication
1646RADIUS Accounting
1680Carbon Copy
1717Convoy
1723PPTP control port
1731
1755Windows Media .asf
1758TFTP multicast
1761
1762
1808
1813RADIUS accounting
1818ETFTP
1985HSRP
1999Cisco AUTH
2000
2001glimpse
2005
2010
2023
2048
2049NFS
2064distributed.net
2065DLSw
2066DLSw
2080
2106MZAP
2140DeepThroat
2301Compaq Insight Management Web Agents
2327Netscape Conference
2336Apple UG Control
2345
2427MGCP gateway
2504WLBS
2535MADCAP
2543sip
2565
2592netrek
2727MGCP call agent
2766
2628DICT
2998ISS Real Secure Console Service Port
3000Firstclass
3001
3031Apple AgentVU
3052
3128squid
3130ICP
3150DeepThroat
3264ccmail
3283Apple NetAssitant
3288COPS
3305ODETTE
3306mySQL
3352
3389NT Terminal Server
3520
3521netrek
3879
4000icq, command-n-conquer
4045
4144
4242
4321rwhois
4333mSQL
4444
47017
4827HTCP
5000
5001
5002
5004RTP
5005RTP
5010Yahoo! Messenger
5050
5060SIP
5135
5150
5190AIM
5222
5353
5400
5500securid
5501securidprop
5300
5423Apple VirtualUser
5555
5556
5632PCAnywhere
5678
5800VNC
5801VNC
5900VNC
5901VNC
5843
6000X Windows
6112BattleNet
6050
6499
6500
6502Netscape Conference
6547
6548
6549
6666
6670VocalTec Internet Phone, DeepThroat
6699napster
7070RealServer/QuickTime
7161
7323
7777
7778Unreal
7640
7648CU-SeeMe
7649CU-SeeMe
7654
8000
8002
8010WinGate 2.1
8080HTTP
8100
8181HTTP
8383IMail WWW
8765
8875napster
8888napster
8890
9000
9090
9200
9704
9669
9876
9989
10008cheese worm
10752
12345
11371PGP 5 Keyserver
12346
13000
13223PowWow
13224PowWow
14000
14237Palm
14238Palm
14690
16969
18888LiquidAudio
21157Activision
22555
22703
22793
23213PowWow
23214PowWow
23456EvilFTP
26000Quake
27000
27001QuakeWorld
27010Half-Life
27015Half-Life
27374
27444
27665
27910
27960QuakeIII
28000
28001
28002
28003
28004
28005
28006
28007
28008
30029AOL Admin
30100
30101
30102
30103
30303
30464
31335
31337Back Orifice
32000
32771
32777rpc.walld
34555
40193Novell
41524arcserve discovery
45000Cisco NetRanger postofficed
50505
52901
54321
61000
65301
Multicasthidden
ICMP Typehidden
9998
32773rpc.ttdbserverd
32776rpc.spray
32779rpc.cmsd
38036timestep
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   Last updated March 21 2017.