Looking for some information on what would be the correct way to reverse
proxy to a workstation running the realVNC Viewer on VNCPort 5900 and HTTP
Port 5800.

Any advice would be helpful.

The way it is setup at the moment, it only works when I drop IPFLT.

Created the Reverse Proxy Settings, for both ports, created ACL for both
ports TCP and UDP.

Do I need to create a filter exception as well?

I have the reverse proxies for WebAccess and our 2 Internal PUPLIC Access
WebSites working.