Service Port Number List

Here is a list of services and their assigned port numbers

ssh - 22

ftp - 20, 21 (21 for ftp control signal)

telnet - 23
smtp - 25

pop3 - 110

imap - 143
http - 80

https - 443
dns - 53
dhcp - 67, 68
ntp - 123
samba - 137, 138, 139, 445
nfs - 2049
tcp - 3
udp - 17
mysql - 3306

portmap - 111
imap's - 993
pop3's - 995

tftp - 69

For complete list refer : http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xml