cPanel has several services for website hosting and server management. Some of these require a specific port to be open for functioning correctly. Hence it would be best if you allowed them through your firewall. A brief list of services and the ports they listen upon is given below:
| cPanel Ports and Services | |
|---|---|
| Service | Ports |
| cPanel | 2082 |
| cPanel SSL | 2083 |
| WHM | 2086 |
| WHM SSL | 2087 |
| FTP | 0 |
| SSH | 22 |
| SMTP | 25, 26, 465 |
| DNS | 53 |
| HTTPD | 80, 443 |
| Webmail | 2095 |
