What is CPanel = it’s a web-based hosting configuration tool. It is a graphical web-based web-hosting control panel, designed to simplify administration of websites.
Previously, CPanel is only accessible through port 2082. I’m not sure about other web hosting, however Exabytes.com.my does provide CPanel access from a client behind firewall. It’s a very convenience for me as I do a lot of domain management through firewalled network.