| Port | | Description |
|
| | 21 | | FTP, File Transfer Protocol, control. |
| 23 | | Telnet. |
| 25 | | SMTP, Simple Mail Transfer Protocol. |
| 53 | | DNS, Domain Name System. |
| 80 | | HTTP, HyperText Transfer Protocol. |
| 110 | | POP, Post Office Protocol, version 3. |
| 119 | | NNTP, Network News Transfer Protocol. |
| 137 | | NETBIOS Name Service. |
| 138 | | NETBIOS Datagram Service. |
| 139 | | NETBIOS Session Service. |
| 143 | | IMAP4 Server Port 143 |
| 443 | | HTTPS, HTTP over SSL/TLS. |
| 1863 | | MSN Messenger |
| 3389 | | Terminal/Remote Desktop |
| 4000 | | ICQ Messenger |
| 5050 | | Yahoo Messenger |
| 5190 | | AIM Messenger |
| 5190 | | ICQ Messenger (Login) |
| 5631 | | PCAW (7.52+) |
| 5632 | | PCAW (7.52+) |
| 65301 | | PCAW (1.0-7.51) |
|
|
