Internet Ports List

1 Port Service Multiplexer
2 Management Utility
3 Compression Process
5 Remote Job Entry
7 Echo
11 Systat Active Users
13 Daytime
17 Quote of the Day
18 Message Send Protocol
19 Character Generator
20 File Transfer (FTP) [Default Data]
21 File Transfer (FTP) [Control]
22 SSH Remote Login Protocol
23 Telnet
25 Simple Mail Transfer (SMTP)