Hi Maz,
I used to haveI used to have all NAT connection visible in my gatekeeper but now it is not. I am not sure but after the installation of an ethernet ADSL modem this happened
It could be that the new ADSL modem has DHCP on, and is passing out a different Gateway; so connections are now going directly to the router instead of via WinGate.
I want to use a second NIC to restrict direct access to ADSL by making the ADSL only to that new NIC but NAT connection fails
Definitely the recommended way, no one can bypass WinGate then. The key to setting that up is making sure your network adapters were detected correctly. The network card to the internet should be marked as External (default friewalled) and the network card pointing to your LAN should me marked as Internal (default allow any connection). Please see section 2 of the following knowledge base article for more info.
http://support.qbik.com/index.php?_a=kn ... ils&_i=123
Also, the latest version of WinGate is 6.1.1; all WinGate licenses can have their installations upgraded, but only the features originally bought would be enabled; request a trial to see the new features.