cPanel default open ports

You must open the following ports to run cPanel behind a firewall. Mostly these ports will automatically open when you install the cpanel. CSF firewall also fetch default ports automatically.

cPanel default open ports in your server.

FTP

Port	Service	Details
20	FTP	TCP inbound/outbound
21	FTP	TCP/UDP inbound/outbound

Server administration and maintenance

Port	Service	Details
22	SSH	TCP inbound
37	rdate	TCP outbound

Email

Port	Service	Details
25	SMTP	TCP inbound/outbound
26	SMTP	TCP inbound/outbound
110	POP3	TCP inbound
143	IMAP4	TCP inbound
465	SMTP TLS/SSL	TCP/UDP inbound/outbound
783	SpamAssassin	TCP/UDP inbound
993	IMAP4 SSL	TCP inbound
995	POP3 SSL	TCP inbound
2095	Webmail	TCP inbound
2096	Webmail SSL	TCP inbound

Essential services

Port	Service	Details
53	DNS	TCP/UDP inbound/outbound (inbound is needed only if you run your own public DNS server)
80	HTTP	TCP inbound/outbound
443	HTTPS	TCP inbound
3306	MySQL	TCP (only if you need to connect remotely)

WebDAV

Port	Service	Details
2077	WebDAV	TCP/UDP inbound/outbound
2078	WebDAV SSL	TCP/UDP inbound/outbound

cPanel

Port	Service	Details
2082	cPanel	TCP inbound
2083	cPanel SSL	TCP inbound
2086	WHM	TCP inbound
2087	WHM SSL	TCP inbound
2089	cPanel license	TCP outbound

Optional services

Port	Service	Details
43	whois	TCP outbound
113	ident	TCP outbound
873	rsync	TCP/UDP outbound
6666	IRC	TCP inbound

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