Question: My server is behind the firewall. What ports do I need to keep open?
Solution: If your server is behind the firewall, the following common ports need to remain open.
Firewall Settings for HC Panel:
HC uses the following ports to communicate between primary and secondary machines, make sure it is allowed in the inbound and outbound firewall rules.
HC Administration Website: 8797 (Optional)
HC Provisioning Service: 8796
HC Portal API: 8798 (Only on Windows Master server)
HC Client Service 8795
HC Server Service 8794
Click & Apps Administration Website: 8799
SMTP SSL 465
IMAP SSL 993
POP SSL 995
MSSQL Server 1433
Remote Server Connection:
Remote Desktop Protocol (Terminal Service) 3389
Linux SSH 22
External Reference: The Well Known Ports are assigned by the IANA. A good port assignment reference is available at http://www.iana.org/assignments/port-numbers