opening ports

[stb]

I have wingate 6.1.1 - just upgraded from the previous ver. Wingate runs on an xp pc at x.x.x.97. the router is on x.x.x.96.
My network settings have the gateway set to x.x.x.97 I can browse the net etc and get on on vnc to other pcs at different sites. i have ports opened on the firewall pointing down to my pc and another pc. these were all working fine but since the upgrade of wingate noone from the outside using vnc can connect in. if i change my default gateway from x.x.x.97 [wingate] to x.x.x.96 [router] vnc will work from the outsite world in [as it always had], but switch it back again to x.x.x.97 vnc from the outside in does not connect.
I need to use the x.x.x.97 as the gateway so all ideas greatly welcomed

[stb]

An update on this is that when the wingate proxy [x.x.x.97] is set as the default gateway on my pc , if a user tries to connect from the outside through the router to port 30000 [vnc] i can see the connection coming in with tcpview from sysinternals, but all the outside user gets is 'negotiateing protocols' from vnc and it does not connect, so it seems that when my pc recieves the vnc connection from the outside on port 30000 it tries to reply back out through the gateway, which is wingate, wingate is seeing the outbound request and denying it as it thinks its suspicious.
So how do i keep port 30000 open on my pc for vnc connections while still using wingate [x.x.x.97] as my gateway instead of the router [x.x.x.96]

[Pascal]

Is x.x.x.97 a private or public IP?

[stb]

x.x.x.97 is the wingate server inside the firewall sitting on the lan

[Pascal]

Yes, what I'm trying to establish is if it is using a public or private IP address range. That will tell us if the adapters are set as Internal or External and thus, which firewall ruleset will apply.

[stb]

have fixed the problrm by setting up a tcp mapping in wingate, and instead of port forwarding to the other pc on the lan from the router, i port forward to wingate and let the tcp mapping forward to the in question on the lan, so its now
outside pc vncs to router ----> router port forwards to wingate ----> wingate through a tcp mapping forwards to pc on lan for the vnc session.
I still cannot figure out though why i have to do this when it worked all along without going through wingate