Article ID: 3238, created on Nov 30, 2007, last review on Apr 17, 2012
Servers in H-Sphere clusters communicate only through the Control Panel. There is no way for servers like web and DNS exchange commands directly.
To communicate with Linux/Unix servers, CP uses Shell or Perl scripts via SSH protocol (port 22) as the cpanel user.
Communication between the CP and Windows servers is performed through the SOAP protocol (port 10125), which allows for cross-platform exchange of data in XML documents via HTTP. In versions before 2.4, CP communicated with Winboxes through direct HTTP requests (port 80), which were handled by ASP scripts.