Lista completa de puertos y servicios

útil a la hora de hacer un análisis de puertos y servicios de un computador y util para planear un ataque de puertos analizando cuales están abiertos y cuales no:

Keyword         Decimal    Description                     References
-------         -------    -----------                     ----------
                 0/tcp    Reserved
                 0/udp    Reserved
#                          Jon Postel 
tcpmux            1/tcp    TCP Port Service Multiplexer
tcpmux            1/udp    TCP Port Service Multiplexer
#                          Mark Lottor 
compressnet       2/tcp    Management Utility
compressnet       2/udp    Management Utility
compressnet       3/tcp    Compression Process
compressnet       3/udp    Compression Process
#                          Bernie Volz 
#                 4/tcp    Unassigned
#                 4/udp    Unassigned
rje               5/tcp    Remote Job Entry
rje               5/udp    Remote Job Entry
#                          Jon Postel 
#                 6/tcp    Unassigned
#                 6/udp    Unassigned
echo              7/tcp    Echo
echo              7/udp    Echo
#                          Jon Postel 
#                 8/tcp    Unassigned
#                 8/udp    Unassigned
discard           9/tcp    Discard
discard           9/udp    Discard
#                          Jon Postel 
discard           9/dccp   Discard SC:DISC
#                          IETF dccp WG, Eddie Kohler , [RFC4340]
#                10/tcp    Unassigned
#                10/udp    Unassigned
systat           11/tcp    Active Users
systat           11/udp    Active Users
#                          Jon Postel 
#                12/tcp    Unassigned
#                12/udp    Unassigned
daytime          13/tcp    Daytime (RFC 867)
daytime          13/udp    Daytime (RFC 867)
#                          Jon Postel 
#                14/tcp    Unassigned
#                14/udp    Unassigned
#                15/tcp    Unassigned [was netstat]
#                15/udp    Unassigned
#                16/tcp    Unassigned
#                16/udp    Unassigned
qotd             17/tcp    Quote of the Day
qotd             17/udp    Quote of the Day
#                          Jon Postel 
msp              18/tcp    Message Send Protocol
msp              18/udp    Message Send Protocol
#                          Rina Nethaniel <---none--->
chargen          19/tcp    Character Generator
chargen          19/udp    Character Generator
ftp-data         20/tcp    File Transfer [Default Data]
ftp-data         20/udp    File Transfer [Default Data]
ftp              21/tcp    File Transfer [Control]
ftp              21/udp    File Transfer [Control]
#                          Jon Postel 
ssh              22/tcp    SSH Remote Login Protocol

Esa solo es una pequeñísima porción para ver la lista completa entra a:

http://www.iana.org/assignments/port-numbers