vpn passthrough to windows server 2008 issue

[Guest]

[adams79]

Hello,
i've replaced IPCop by endian that appears a lot more "polished". Unfortunately I'm not able to got the Windows VPN to wrk.

I've disabled the outgoing firewall and i've created there two port forwading rules:
GRE 192.168.0.2 : GRE  192.168.1.110 : GRE
TCP 192.168.0.2 : 1723  192.168.1.110 : 1723

On the client I obtain a 718 error.
I think that this issue is related to the double natting operated by my ISP (I've a router of my ISP here and I can't change it). With IpCop i haven't this porblem....

Thank you very much