I came across this nice cheatsheet that lists all of the cPanel ports and what services they work with, so I figured I would post it up here for my own personal use, if no one else needs it.
| Port | Service | Protcol | In/out |
|---|---|---|---|
| 20 | FTP | TCP | Both |
| 21 | FTP | TCP, UDP | Both |
| 22 | SSH | TCP | Inbound |
| 25 | SMTP | TCP | Both |
| 26 | SMTP | TCP | Both |
| 37 | Rdate | TCP | Outbound |
| 43 | Whois | TCP | Outbound |
| 53 | DNS | TCP, UDP | Both |
| 80 | HTTP | TCP | Both |
| 110 | POP3 | TCP | Inbound |
| 113 | Ident | TCP | Outbound |
| 143 | IMAP4 | TCP | Inbound |
| 443 | HTTPS | TCP | Inbound |
| 465 | SMTP (TLS/SSL) | TCP, UDP | Both |
| 873 | Rsync | TCP, UDP | Outbound |
| 993 | IMAP4 (SSL) | TCP | Inbound |
| 995 | POP3 (SSL) | TCP | Inbound |
| 2077 | WebDAV | TCP, UDP | Both |
| 2078 | WebDAV (SSL) | TCP, UDP | Both |
| 2082 | cPanel | TCP | Inbound |
| 2083 | cPanel (SSL) | TCP | Inbound |
| 2086 | WHM | TCP | Inbound |
| 2087 | WHM (SSL) | TCP | Inbound |
| 2095 | Webmail | TCP | Inbound |
| 2096 | Webmail (SSL) | TCP | Inbound |
| 3306 | MySQL | TCP | Inbound |
| 6666 | Melange Chat | TCP | Inbound |
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