{ "content": "

Understanding Proxy Subdomains in cPanel<\/a><\/h1>

The proxy subdomain<\/strong> feature in cPanel<\/a> and WHM<\/a> is a specialized configuration that allows users to access administrative services through standard web ports. By default, cPanel<\/a> services operate on specific ports: Port 2083<\/a> for the control panel, Port 2087<\/a> for WHM<\/a>, and Port 2096<\/a> for Webmail<\/a>. However, many restrictive firewalls in corporate or educational environments block these non-standard ports.<\/p>

To circumvent these restrictions, cPanel<\/a> utilizes Apache HTTP Server<\/a>'s mod_proxy<\/code> module. This configuration maps subdomains such as cpanel.example.com<\/code>, whm.example.com<\/code>, and webmail.example.com<\/code> to the corresponding local ports. When a request hits the server on port 80 or 443 via these subdomains, the Proxy Server<\/a> logic redirects the traffic internally to the appropriate service. This functionality is typically managed within the Tweak Settings<\/a> section of WHM<\/a>.<\/p>

According to the Official cPanel Documentation<\/a>, enabling proxy subdomains also requires appropriate DNS<\/a> records. Usually, these are CNAME Records<\/a> pointing to the main domain or A Records<\/a> pointing to the server's IP Address<\/a>. Furthermore, SSL Certificates<\/a> must be issued for these subdomains to ensure secure encrypted access, often automated through AutoSSL<\/a> or Let's Encrypt<\/a>.<\/p>