Those who are behind strict corporate firewalls might not be able to access their web host-provided cPanel. The solution is to install cPanel Proxy on a sub-domain (like http://cpanel.yoursite.com).

cPanel Proxy is a small PHP script that gives access to your cPanel at port 80 by acting like a proxy. Its installation is as simple as uploading the files to a sub-domain.

Below are the steps to set it up:

1. Download the latest version (current: 0.4.1) from here and extract the contents to your local disk.
2. Create a sub-domain. Now, for this you will need to have access to cPanel. So create this when you are at your home or any other place other than the restrictive firewall location.
3. Upload all the files to the root directory of your sub-domain. Ex.: public_html/cpanel

That’s it! Now you should be able to access the cPanel at your sub-domain.