For your edification, included below are port numbers for most major network services. This is taken from a /etc/services file, of course:)

ftp		21/tcp
ssh             22/tcp
telnet		23/tcp
smtp		25/tcp				# mail
gopher		70/tcp,udp			# Internet Gopher
gopher		70/udp
finger		79/tcp
www		80/tcp				# WorldWideWeb HTTP
www		80/udp				# HyperText Transfer Protocol
kerberos	88/tcp				# Kerberos v5
kerberos	88/udp
pop2		109/tcp				# POP version 2
pop3		110/tcp,udp			# POP version 3
sunrpc		111/tcp,udp
nntp		119/tcp				# USENET News Transfer Protocol
imap2		143/tcp,udp			# Interim Mail Access Proto v2
snmp		161/udp				# Simple Net Mgmt Proto
snmp-trap	162/udp				# Traps for SNMP
xdmcp		177/tcp,udp			# X Display Mgr. Control Proto
nextstep	178/tcp,udp			# NeXTStep window
irc		194/tcp,udp			# Internet Relay Chat
at-rtmp		201/tcp,udp			# AppleTalk routing
at-nbp		202/tcp,udp			# AppleTalk name binding
at-echo		204/tcp,udp			# AppleTalk echo
at-zis		206/tcp,udp			# AppleTalk zone information
imap3		220/tcp,udp			# Interactive Mail Access
ulistserv	372/tcp,udp			# UNIX Listserv
talk		517/udp
ntalk		518/udp

Last Edited on : 3/3/99