Knowledgebase

What ports should be open to run cPanel / WHM behind a firewall ?

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.

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