- TCP 20 - FTP
- TCP 21 - FTP
- TCP 22 - SSH
- TCP 25 - SMTP
- TCP 26 - SMTP
- TCP 53 - DNS
- TCP 80 - HTTP
- TCP 110 - POP3
- TCP 143 - IMAP4
- TCP 443 - HTTPS
- TCP 465 - SMTP (TLS / SSL)
- TCP 993 - IMAP4 (SSL)
- TCP 995 - POP3 (SSL)
- TCP 2082 http://yourdomain.com/cpanel cPanel
- TCP 2083 https://yourdomain.com/cpanel cPanel (SSL)
- TCP 2086 http://yourdomain.com/whm WHM
- TCP 2087 https://yourdomain.com/whm WHM (SSL)
- TCP 2095 http://yourdomain.com/webmail Webmail
- TCP 2096 https://yourdomain.com/webmail Webmail (SSL)
- TCP 3306 - MySQL (external connections)
- TCP 6666 - Chat
- UDP 21 - FTP
- UDP 53 - DNS
- UDP 465 - SMTP (TLS / SSL)