I have 5 different static IP addresses assigned to the External interface. If I enable Access Portal on port 446, it can be accessed with any of these IP addresses. How can I restrict the Access Portal to only one of the IP addresses?
Access Portal uses the same webserver as SSLVPN does. Editing the WatchGuard SSLVPN policy to be from <Any-External, Any-Trusted, etc) and TO: the specific IPs that you want it to listen on /instead/ of should accomplish what you're looking for.
Note that this will also change what IPs the SSLVPN listens on, as they run on that same web service.
WatchGuard Customer Support
Thank you very much for this hint. Now I can run other services on port 443 besides the access portal.
But remember: If you want to use the access portal for other services, you need to configure the IP addresses of these services in the WatchGuard SSLVPN rule.