To configure Forwarding Gateway in SSL mode:
Uninstall RAS from server where Forwarding Gateway should be installed(if it was installed on the server before).
Delete the Gateway from RAS Console(if it was added to the Farm).
Make sure that SSL connection(usually on port 443) is configured on the Normal Gateway: RAS Secure Client Gateway Properties-> SSL/TLS tab.
Install on only RAS Secure Client Gateway component manually on the Forwarding Gateway server: https://kb.parallels.com/en/123692
Launch RAS Console on the RAS Secure Client Gateway server.
Click Change Ownership...
Specify the Forwarding Mode, Name of the server that the request should be forwarded to, Port(usually 443) and tick the check box 'Use SSL connection'.
Go to RAS Console on the Publishing Agent server and tick the check box in front of the new Forwarding Gateway and configure it to use SSL for inbound connections(RAS Console-> Farm-> Gateways-> Gateway Properties-> SSL/TLS tab).
- Apply the settings.