my cheat sheet most common tcp/udp ports
1 /etc/services
This is just the most commonly known/used ports from /etc/services
- daytime 13/udp # Daytime (RFC 867)
- daytime 13/tcp # Daytime (RFC 867)
- ftp-data 20/udp # File Transfer [Default Data]
- ftp-data 20/tcp # File Transfer [Default Data]
- ftp 21/udp # File Transfer [Control]
- ftp 21/tcp # File Transfer [Control]
- # Jon Postel <postel@isi.edu>
- ssh 22/udp # SSH Remote Login Protocol
- ssh 22/tcp # SSH Remote Login Protocol
- # Tatu Ylonen <ylo@cs.hut.fi>
- telnet 23/udp # Telnet
- telnet 23/tcp # Telnet
- # Rick Adams <rick@UUNET.UU.NET>
- smtp 25/udp # Simple Mail Transfer
- smtp 25/tcp # Simple Mail Transfer
- time 37/udp # Time
- time 37/tcp # Time
- tacacs 49/udp # Login Host Protocol (TACACS)
- tacacs 49/tcp # Login Host Protocol (TACACS)
- xns-time 52/udp # XNS Time Protocol
- xns-time 52/tcp # XNS Time Protocol
- # Susie Armstrong <Armstrong.wbst128@XEROX>
- domain 53/udp # Domain Name Server
- domain 53/tcp # Domain Name Server
- # E. Wald <ewald@via.enet.dec.com>
- whois++ 63/udp # whois++
- whois++ 63/tcp # whois++
- # Kathy Huber <khuber@bbn.com>
- sql*net 66/udp # Oracle SQL*NET
- sql*net 66/tcp # Oracle SQL*NET
- # Jack Haverty <jhaverty@ORACLE.COM>
- bootps 67/udp # Bootstrap Protocol Server
- bootps 67/tcp # Bootstrap Protocol Server
- bootpc 68/udp # Bootstrap Protocol Client
- bootpc 68/tcp # Bootstrap Protocol Client
- # Bill Croft <Croft@SUMEX-AIM.STANFORD.EDU>
- tftp 69/udp # Trivial File Transfer
- tftp 69/tcp # Trivial File Transfer
- # Christopher Leong <leong@kolmod.mlo.dec.com>
- finger 79/udp # Finger
- finger 79/tcp # Finger
- # David Zimmerman <dpz@RUTGERS.EDU>
- http 80/udp www www-http # World Wide Web HTTP
- http 80/tcp www www-http # World Wide Web HTTP
- # Tim Berners-Lee <timbl@W3.org>
- hosts2-ns 81/udp # HOSTS2 Name Server
- hosts2-ns 81/tcp # HOSTS2 Name Server
- # Earl Killian <EAK@MORDOR.S1.GOV>
- xfer 82/udp # XFER Utility
- xfer 82/tcp # XFER Utility
- # Kevin Murphy <murphy@sevens.lkg.dec.com>
- pop2 109/udp # Post Office Protocol - Version 2
- pop2 109/tcp # Post Office Protocol - Version 2
- # Joyce K. Reynolds <jkrey@isi.edu>
- pop3 110/udp # Post Office Protocol - Version 3
- pop3 110/tcp # Post Office Protocol - Version 3
- # Martin Forssen <maf@dtek.chalmers.se>
- sftp 115/udp # Simple File Transfer Protocol
- sftp 115/tcp # Simple File Transfer Protocol
- # Mark Lottor <MKL@nisc.sri.com>
- sqlserv 118/udp # SQL Services
- sqlserv 118/tcp # SQL Services
- # Larry Barnes <barnes@broke.enet.dec.com>
- nntp 119/udp # Network News Transfer Protocol
- nntp 119/tcp # Network News Transfer Protocol
- # Pierre Arnaud <pierre.arnaud@iname.com>
- ntp 123/udp # Network Time Protocol
- ntp 123/tcp # Network Time Protocol
- # Larry Peterson <llp@ARIZONA.EDU>
- netbios-ns 137/udp # NETBIOS Name Service
- netbios-ns 137/tcp # NETBIOS Name Service
- netbios-dgm 138/udp # NETBIOS Datagram Service
- netbios-dgm 138/tcp # NETBIOS Datagram Service
- netbios-ssn 139/udp # NETBIOS Session Service
- netbios-ssn 139/tcp # NETBIOS Session Service
- # Susie Snitzer <—none—>
- imap 143/udp # Internet Message Access Protocol
- imap 143/tcp # Internet Message Access Protocol
- # Albert G. Broscius <broscius@DSL.CIS.UPENN.EDU>
- sql-net 150/udp # SQL-NET
- sql-net 150/tcp # SQL-NET
- # Sergio Heker <heker@JVNCC.CSC.ORG>
- sqlsrv 156/udp # SQL Service
- sqlsrv 156/tcp # SQL Service
- # Marty Schoffstahl <schoff@NISC.NYSER.NET>
- snmp 161/udp # SNMP
- snmp 161/tcp # SNMP
- snmptrap 162/udp # SNMPTRAP
- snmptrap 162/tcp # SNMPTRAP
- # Leo Hourvitz <leo@NEXT.COM>
- bgp 179/udp # Border Gateway Protocol
- bgp 179/tcp # Border Gateway Protocol
- # Ted J. Socolofsky <Teds@SPIDER.CO.UK>
- irc 194/udp # Internet Relay Chat Protocol
- irc 194/tcp # Internet Relay Chat Protocol
- # Chuck Spitz <spich04@cai.com>
- dbase 217/udp # dBASE Unix
- dbase 217/tcp # dBASE Unix
- # Ashok Marwaha <—none—>
- imap3 220/udp # Interactive Mail Access Protocol v3
- imap3 220/tcp # Interactive Mail Access Protocol v3
- # Glenn Davis <support@unidata.ucar.edu>
- ldap 389/udp # Lightweight Directory Access Protocol
- ldap 389/tcp # Lightweight Directory Access Protocol
- # Bill Davidson <billd@equalizer.cray.com>
- https 443/udp # http protocol over TLS/SSL
- https 443/tcp # http protocol over TLS/SSL
- # [RFC1568]
- microsoft-ds 445/udp # Microsoft-DS
- microsoft-ds 445/tcp # Microsoft-DS
- # Mark H. Needleman <markn@sirsi.com>
- isakmp 500/udp # isakmp
- isakmp 500/tcp # isakmp
- who 513/udp # maintains data bases showing who's
- nntps 563/udp # nntp protocol over TLS/SSL (was snntp)
- nntps 563/tcp # nntp protocol over TLS/SSL (was snntp)
- # Kipp E.B. Hickman <kipp@netscape.com>
- whoami 565/udp # whoami
- whoami 565/tcp # whoami
- # Janna Chang <janna@pmc.philips.com>
- keyserver 584/udp # Key Server
- keyserver 584/tcp # Key Server
- # Gary Howland <gary@systemics.com>
- imap4-ssl 585/udp # IMAP4+SSL (use 993 instead)
- imap4-ssl 585/tcp # IMAP4+SSL (use 993 instead)
- # Terry Gray <gray@cac.washington.edu>
- # Use of 585 is not recommended, use 993 instead
- password-chg 586/udp # Password Change
- password-chg 586/tcp # Password Change
- submission 587/udp # Submission
- submission 587/tcp # Submission
- # Michael Ginn <ginn@tyxar.com>
- ldaps 636/udp # ldap protocol over TLS/SSL (was sldap)
- ldaps 636/tcp # ldap protocol over TLS/SSL (was sldap)
- # Egon Meier-Engelen <egon.meier-engelen@dlr.de>
- ldp 646/udp # LDP
- ldp 646/tcp # LDP
- # Jerry Knight <jknight@realminfo.com>
- nmap 689/udp # NMAP
- nmap 689/tcp # NMAP
- # Carlisle Adams <Cadams@entrust.com>
- netconf-ssh 830/tcp # NETCONF over SSH
- netconf-ssh 830/udp # NETCONF over SSH
- # [RFC4742]
- netconf-beep 831/tcp # NETCONF over BEEP
- netconf-beep 831/udp # NETCONF over BEEP
- # [RFC4744]
- netconfsoaphttp 832/tcp # NETCONF for SOAP over HTTPS
- netconfsoaphttp 832/udp # NETCONF for SOAP over HTTPS
- # [RFC4743]
- netconfsoapbeep 833/tcp # NETCONF for SOAP over BEEP
- netconfsoapbeep 833/udp # NETCONF for SOAP over BEEP
- # 849-859 Unassigned
- iscsi 860/udp # iSCSI
- iscsi 860/tcp # iSCSI
- # RFC-draft-ietf-ips-iscsi-20.txt
- owamp-control 861/tcp # OWAMP-Control
- owamp-control 861/udp # OWAMP-Control
- # [RFC4656]
- # 862-872 Unassigned
- rsync 873/udp # rsync
- rsync 873/tcp # rsync
- ftps-data 989/udp # ftp protocol, data, over TLS/SSL
- ftps-data 989/tcp # ftp protocol, data, over TLS/SSL
- ftps 990/udp # ftp protocol, control, over TLS/SSL
- ftps 990/tcp # ftp protocol, control, over TLS/SSL
- telnets 992/udp # telnet protocol over TLS/SSL
- telnets 992/tcp # telnet protocol over TLS/SSL
- imaps 993/udp # imap4 protocol over TLS/SSL
- imaps 993/tcp # imap4 protocol over TLS/SSL
- # Christopher Allen <ChristopherA@consensus.com>
- pop3s 995/udp # pop3 protocol over TLS/SSL (was spop3)
- pop3s 995/tcp # pop3 protocol over TLS/SSL (was spop3)