A list of common service port numbers (including web, email, and cPanel) is provided below for your convenience. This is helpful in determining which ports to keep open when configuring your software firewall.

21 - FTP

22 - SSH

25 - SMTP

53 - DNS

80 - HTTP

110 - POP3

143 - IMAP4

443 - HTTPS

465 - SMTP (over SSL)

993 - IMAP4 (over SSL)

995 - POP3 (over SSL)

2082 - cPanel

2083 - cPanel (over SSL)

2086 - WHM

2087 - WHM (over SSL)

2095 - Webmail

2096 - Webmail (over SSL)

3306 - MySQL

5432 - PostgreSQL