We recommend the following ports are opened in your firewall to correctly use CPanel and WHM
Port List
port / service / protocol / direction of traffic
- 20 ftp tcp inbound/outbound
- 21 ftp tcp,udp inbound/outbound
- 22 ssh tcp inbound
- 25 smtp tcp inbound/outbound
- 26 smtp tcp inbound/outbound
- 37 rdate tcp outbound
- 43 whois tcp outbound
- 53 DNS tcp/udp inbound/outbound
- 80 http tcp inbound/outbound
- 110 pop3 tcp inbound
- 113 ident tcp outbound
- 143 imap4 tcp inbound
- 443 https tcp inbound
- 465 smtp tls/ssl tcp/udp inbound/outbound
- 873 rsync tcp/udp outbound
- 993 imap4 ssl tcp inbound
- 995 pop3 ssl tcp inbound
- 2082 cpanel tcp inbound
- 2083 cpanel ssl tcp inbound
- 2086 whm tcp inbound
- 2087 whm ssl tcp inbound
- 2089 cp licence tcp outbound
- 2095 Webmail tcp inbound
- 2096 Webmail SSL tcp inbound
- 3306 mysql tcp (only if you need to connect remotely)
- 6666 chat tcp inbound
These settings apply to a base installation of CPanel/WHM version 10 onwards.
Any add-ons or advanced configurations such as DNS clustering may require additional ports.
