Ports

Common ports

Service    Port       tcp/udp     Description
-------    --------   --------    -----------
chargen     19        tcp, udp    (Unix)
daytime     13        udp         (Unix)
dhcp/bootp  67, 68    udp         dynamic host configuration protocol
discard      9        tcp, udp    (Unix)
dns         53        tcp, udp    domain name system
echo         7        udp         (Unix)
finger      79        tcp         (Unix)
ftp         20, 21    tcp         file transfer protocol
http        80        tcp         hyper text transfer protocol
https      443        tcp         secure http
imap       143        tcp         internet message access protocol
irc        194        tcp         internet relay chat
ircs       994        tcp         secure irc
kerberos    88        tcp
ldap       389        tcp, udp    lightweight directory access protocol
nfs       2049        tcp, upd    (Unix)
nntp       119        tcp         network news transfer protocol
ntp        123        udp         network time protocol
ping         7
pop        110        tcp         post office protocol
pop3       110        tcp         post office protocol, version 3
quote       17        udp         (Unix)
rpc         11        udp         remote procedure call (Unix)
rsh        514        tcp         remote shell protocol (Unix)
smtp        25        tcp         simple mail transfer protocol
snmp       161, 162   tcp, udp    simple network management protocol
ssh         22        tcp         secure shell protocol (Unix)
telnet      23        tcp
tftp        69        udp         trivial file transfer protocol
vnc       5800, 5900  tcp         virtual network computing

Resources

• Registered Ports - iana.org

Sources

• http://www.iana.org/assignments/port-numbers - Registered ports