Section 8.5: Common TCP and UDP Ports Assignments

Protocol Port Service
TCP 1 tcpmux
TCP/UDP 7 echo
TCP/UDP 9 discard
TCP 11 systat
TCP/UDP 13 daytime
TCP 15 netstat
TCP/UDP 19 chargen
TCP 20 ftpdata
TCP 21 ftp
TCP 23 telnet
TCP 25 smtp
TCP/UDP 37 time
TCP/UDP 42 wins
TCP 43 whois
TCP 49 tacacs
TCP/UDP 53 domain
UDP 67 bootp
UDP 69 tftp
TCP 70 gopher
TCP 79 finger
TCP 80 http
TCP 87 link
UDP 88 kerberos
TCP 95 supdup
TCP 109 Pop2
TCP 110 Pop3
TCP/UDP 111 sunrpc
TCP 113 auth
TCP 119 nntp
UDP 123 ntp
TCP/UDP 135 loc-srv
TCP/UDP 137 Nbname (NetBEUI over TCP/IP name service)
UDP 138 nbdgram (NetBEUI over TCP/IP - NB datagram)
TCP 139 nbsess (NetBEUI over TCP/IP - NB session)
TCP 143 imap
TCP 144 NeWs
UDP 161 snmp
UDP 162 snmptrap
UDP 177 xdmcp
TCP 179 bgp (Border Gateway Protocol)
TCP 389 ad (Windows 2000 Active Directory)
TCP 443 ssl
TCP 445 LDAP
TCP 512 exec
UDP 512 biff
TCP 513 login
UDP 513 who
TCP 514 shell
UDP 514 syslog
TCP 515 printer (used by lpr)
UDP 517 talk
UDP 518 ntalk
UDP 520 route
TCP 540 uucp
TCP 543 klogind
TCP 993 i-ssl (IMAP over SSL)
TCP 1025 listen
TCP 1028 unknown
TCP 1433 ms-sql
TCP 1723 PPTPC
TCP 1725 PPTP
TCP/UDP 2049 nfs
TCP 2766 listen
TCP 4144 CIM (Compuserve Information Manager)
TCP 5190 AOL (America On Line via TCP)
TCP 5556 rwd
TCP 6667 IRC (Internet Relay Chat)
TCP 7000 xfont
TCP 8002 rcgi