port
- a place (seaport or airport) where people and merchandise can enter or leave a country
- sweet dark-red dessert wine originally from Portugal
- an opening (in a wall or ship or armored vehicle) for firing through
- interface: (computer science) computer circuit consisting of the hardware and associated circuitry that links one device with another (especially a computer and a hard disk drive or other peripherals)
The Well Known Ports are assigned by the IANA and on most systems can only be used by system (or root) processes or by programs executed by privileged users.
To the extent possible, these same port assignments are used with the UDP (RFC 768).
ports 17-110 (most widely known, complete list below)
qotd 17/tcp Quote of the Day qotd 17/udp Quote of the Day
- Jon Postel <postel@isi.edu>
msp 18/tcp Message Send Protocol msp 18/udp Message Send Protocol
- Rina Nethaniel <---none--->
chargen 19/tcp Character Generator chargen 19/udp Character Generator ftp-data 20/tcp File Transfer [Default Data] <-FTP ftp-data 20/udp File Transfer [Default Data] <-FTP ftp 21/tcp File Transfer [Control] <-FTP ftp 21/udp File Transfer [Control] <-FTP
- Jon Postel <postel@isi.edu>
ssh 22/tcp SSH Remote Login Protocol <-SSH ssh 22/udp SSH Remote Login Protocol <-SSH
- Tatu Ylonen <ylo@cs.hut.fi>
telnet 23/tcp Telnet <-Telnet telnet 23/udp Telnet <-Telnet
- Jon Postel <postel@isi.edu>
24/tcp any private mail system
24/udp any private mail system
- Rick Adams <rick@UUNET.UU.NET>
smtp 25/tcp Simple Mail Transfer <-SMTP smtp 25/udp Simple Mail Transfer <-SMTP
- Jon Postel <postel@isi.edu>
- 26/tcp Unassigned
- 26/udp Unassigned
nsw-fe 27/tcp NSW User System FE nsw-fe 27/udp NSW User System FE
- Robert Thomas <BThomas@F.BBN.COM>
- 28/tcp Unassigned
- 28/udp Unassigned
msg-icp 29/tcp MSG ICP msg-icp 29/udp MSG ICP
- Robert Thomas <BThomas@F.BBN.COM>
- 30/tcp Unassigned
- 30/udp Unassigned
msg-auth 31/tcp MSG Authentication msg-auth 31/udp MSG Authentication
- Robert Thomas <BThomas@F.BBN.COM>
- 32/tcp Unassigned
- 32/udp Unassigned
dsp 33/tcp Display Support Protocol dsp 33/udp Display Support Protocol
- Ed Cain <cain@edn-unix.dca.mil>
- 34/tcp Unassigned
- 34/udp Unassigned
35/tcp any private printer server
35/udp any private printer server
- Jon Postel <postel@isi.edu>
- 36/tcp Unassigned
- 36/udp Unassigned
time 37/tcp Time time 37/udp Time
- Jon Postel <postel@isi.edu>
rap 38/tcp Route Access Protocol rap 38/udp Route Access Protocol
- Robert Ullmann <ariel@world.std.com>
rlp 39/tcp Resource Location Protocol rlp 39/udp Resource Location Protocol
- Mike Accetta <MIKE.ACCETTA@CMU-CS-A.EDU>
- 40/tcp Unassigned
- 40/udp Unassigned
graphics 41/tcp Graphics graphics 41/udp Graphics name 42/tcp Host Name Server name 42/udp Host Name Server nameserver 42/tcp Host Name Server nameserver 42/udp Host Name Server nicname 43/tcp Who Is nicname 43/udp Who Is mpm-flags 44/tcp MPM FLAGS Protocol mpm-flags 44/udp MPM FLAGS Protocol mpm 45/tcp Message Processing Module [recv] mpm 45/udp Message Processing Module [recv] mpm-snd 46/tcp MPM [default send] mpm-snd 46/udp MPM [default send]
- Jon Postel <postel@isi.edu>
ni-ftp 47/tcp NI FTP ni-ftp 47/udp NI FTP
- Steve Kille <S.Kille@isode.com>
auditd 48/tcp Digital Audit Daemon auditd 48/udp Digital Audit Daemon
- Larry Scott <scott@zk3.dec.com>
tacacs 49/tcp Login Host Protocol (TACACS) tacacs 49/udp Login Host Protocol (TACACS)
- Pieter Ditmars <pditmars@BBN.COM>
re-mail-ck 50/tcp Remote Mail Checking Protocol re-mail-ck 50/udp Remote Mail Checking Protocol
- Steve Dorner <s-dorner@UIUC.EDU>
la-maint 51/tcp IMP Logical Address Maintenance la-maint 51/udp IMP Logical Address Maintenance
- Andy Malis <malis_a@timeplex.com>
xns-time 52/tcp XNS Time Protocol xns-time 52/udp XNS Time Protocol
- Susie Armstrong <Armstrong.wbst128@XEROX>
domain 53/tcp Domain Name Server domain 53/udp Domain Name Server
- Paul Mockapetris <PVM@ISI.EDU>
xns-ch 54/tcp XNS Clearinghouse xns-ch 54/udp XNS Clearinghouse
- Susie Armstrong <Armstrong.wbst128@XEROX>
isi-gl 55/tcp ISI Graphics Language isi-gl 55/udp ISI Graphics Language xns-auth 56/tcp XNS Authentication xns-auth 56/udp XNS Authentication
- Susie Armstrong <Armstrong.wbst128@XEROX>
57/tcp any private terminal access
57/udp any private terminal access
- Jon Postel <postel@isi.edu>
xns-mail 58/tcp XNS Mail xns-mail 58/udp XNS Mail
- Susie Armstrong <Armstrong.wbst128@XEROX>
59/tcp any private file service
59/udp any private file service
- Jon Postel <postel@isi.edu>
60/tcp Unassigned
60/udp Unassigned
ni-mail 61/tcp NI MAIL ni-mail 61/udp NI MAIL
- Steve Kille <S.Kille@isode.com>
acas 62/tcp ACA Services acas 62/udp ACA Services
- E. Wald <ewald@via.enet.dec.com>
whois++ 63/tcp whois++ whois++ 63/udp whois++
- Rickard Schoultz <schoultz@sunet.se>
covia 64/tcp Communications Integrator (CI) covia 64/udp Communications Integrator (CI)
- Dan Smith <dan.smith@den.galileo.com>
tacacs-ds 65/tcp TACACS-Database Service tacacs-ds 65/udp TACACS-Database Service
- Kathy Huber <khuber@bbn.com>
sql*net 66/tcp Oracle SQL*NET sql*net 66/udp Oracle SQL*NET
- Jack Haverty <jhaverty@ORACLE.COM>
bootps 67/tcp Bootstrap Protocol Server bootps 67/udp Bootstrap Protocol Server bootpc 68/tcp Bootstrap Protocol Client bootpc 68/udp Bootstrap Protocol Client
- Bill Croft <Croft@SUMEX-AIM.STANFORD.EDU>
tftp 69/tcp Trivial File Transfer tftp 69/udp Trivial File Transfer
- David Clark <ddc@LCS.MIT.EDU>
gopher 70/tcp Gopher gopher 70/udp Gopher
- Mark McCahill <mpm@boombox.micro.umn.edu>
netrjs-1 71/tcp Remote Job Service netrjs-1 71/udp Remote Job Service netrjs-2 72/tcp Remote Job Service netrjs-2 72/udp Remote Job Service netrjs-3 73/tcp Remote Job Service netrjs-3 73/udp Remote Job Service netrjs-4 74/tcp Remote Job Service netrjs-4 74/udp Remote Job Service
- Bob Braden <Braden@ISI.EDU>
75/tcp any private dial out service
75/udp any private dial out service
- Jon Postel <postel@isi.edu>
deos 76/tcp Distributed External Object Store deos 76/udp Distributed External Object Store
- Robert Ullmann <ariel@world.std.com>
77/tcp any private RJE service
77/udp any private RJE service
- Jon Postel <postel@isi.edu>
vettcp 78/tcp vettcp vettcp 78/udp vettcp
- Christopher Leong <leong@kolmod.mlo.dec.com>
finger 79/tcp Finger finger 79/udp Finger
- David Zimmerman <dpz@RUTGERS.EDU>
http 80/tcp World Wide Web HTTP <-WWW http 80/udp World Wide Web HTTP <-WWW www 80/tcp World Wide Web HTTP <-WWW www 80/udp World Wide Web HTTP <-WWW www-http 80/tcp World Wide Web HTTP <-WWW www-http 80/udp World Wide Web HTTP <-WWW
- Tim Berners-Lee <timbl@W3.org>
hosts2-ns 81/tcp HOSTS2 Name Server hosts2-ns 81/udp HOSTS2 Name Server
- Earl Killian <EAK@MORDOR.S1.GOV>
xfer 82/tcp XFER Utility xfer 82/udp XFER Utility
- Thomas M. Smith <Thomas.M.Smith@lmco.com>
mit-ml-dev 83/tcp MIT ML Device mit-ml-dev 83/udp MIT ML Device
- David Reed <--none--->
ctf 84/tcp Common Trace Facility ctf 84/udp Common Trace Facility
- Hugh Thomas <thomas@oils.enet.dec.com>
mit-ml-dev 85/tcp MIT ML Device mit-ml-dev 85/udp MIT ML Device
- David Reed <--none--->
mfcobol 86/tcp Micro Focus Cobol mfcobol 86/udp Micro Focus Cobol
- Simon Edwards <--none--->
87/tcp any private terminal link
87/udp any private terminal link
- Jon Postel <postel@isi.edu>
kerberos 88/tcp Kerberos kerberos 88/udp Kerberos
- B. Clifford Neuman <bcn@isi.edu>
su-mit-tg 89/tcp SU/MIT Telnet Gateway su-mit-tg 89/udp SU/MIT Telnet Gateway
- Mark Crispin <MRC@PANDA.COM>
- PORT 90 also being used unofficially by Pointcast #########
dnsix 90/tcp DNSIX Securit Attribute Token Map dnsix 90/udp DNSIX Securit Attribute Token Map
- Charles Watt <watt@sware.com>
mit-dov 91/tcp MIT Dover Spooler mit-dov 91/udp MIT Dover Spooler
- Eliot Moss <EBM@XX.LCS.MIT.EDU>
npp 92/tcp Network Printing Protocol npp 92/udp Network Printing Protocol
- Louis Mamakos <louie@sayshell.umd.edu>
dcp 93/tcp Device Control Protocol dcp 93/udp Device Control Protocol
- Daniel Tappan <Tappan@BBN.COM>
objcall 94/tcp Tivoli Object Dispatcher objcall 94/udp Tivoli Object Dispatcher
- Tom Bereiter <--none--->
supdup 95/tcp SUPDUP supdup 95/udp SUPDUP
- Mark Crispin <MRC@PANDA.COM>
dixie 96/tcp DIXIE Protocol Specification dixie 96/udp DIXIE Protocol Specification
- Tim Howes <Tim.Howes@terminator.cc.umich.edu>
swift-rvf 97/tcp Swift Remote Virtural File Protocol swift-rvf 97/udp Swift Remote Virtural File Protocol
- Maurice R. Turcotte
- <mailrus!uflorida!rm1!dnmrt%rmatl@uunet.UU.NET>
tacnews 98/tcp TAC News tacnews 98/udp TAC News
- Jon Postel <postel@isi.edu>
metagram 99/tcp Metagram Relay metagram 99/udp Metagram Relay
- Geoff Goodfellow <Geoff@FERNWOOD.MPK.CA.US>
newacct 100/tcp [unauthorized use] hostname 101/tcp NIC Host Name Server hostname 101/udp NIC Host Name Server
- Jon Postel <postel@isi.edu>
iso-tsap 102/tcp ISO-TSAP Class 0 iso-tsap 102/udp ISO-TSAP Class 0
- Marshall Rose <mrose@dbc.mtview.ca.us>
gppitnp 103/tcp Genesis Point-to-Point Trans Net gppitnp 103/udp Genesis Point-to-Point Trans Net acr-nema 104/tcp ACR-NEMA Digital Imag. & Comm. 300 acr-nema 104/udp ACR-NEMA Digital Imag. & Comm. 300
- Patrick McNamee <--none--->
cso 105/tcp CCSO name server protocol cso 105/udp CCSO name server protocol
- Martin Hamilton <martin@mrrl.lut.as.uk>
csnet-ns 105/tcp Mailbox Name Nameserver csnet-ns 105/udp Mailbox Name Nameserver
- Marvin Solomon <solomon@CS.WISC.EDU>
3com-tsmux 106/tcp 3COM-TSMUX 3com-tsmux 106/udp 3COM-TSMUX
- Jeremy Siegel <jzs@NSD.3Com.COM>
- 106 Unauthorized use by insecure poppassd protocol
rtelnet 107/tcp Remote Telnet Service rtelnet 107/udp Remote Telnet Service
- Jon Postel <postel@isi.edu>
snagas 108/tcp SNA Gateway Access Server snagas 108/udp SNA Gateway Access Server
- Kevin Murphy <murphy@sevens.lkg.dec.com>
pop2 109/tcp Post Office Protocol - Version 2 pop2 109/udp Post Office Protocol - Version 2
- Joyce K. Reynolds <jkrey@isi.edu>
pop3 110/tcp Post Office Protocol - Version 3 <-POP3 pop3 110/udp Post Office Protocol - Version 3 <-POP3
Complete (long!) list here: