L2TP traffic from Windows client through NAT

Question

VPN

There is a VPN server with a public IP address without NATA. There is a Win7 VPN client located behind NAT, there is no access to the NAT router. It is necessary to raise an L2TP session between the client and the server. Because NAT performs address translation, it violates the integrity of IPsec packets and the session does not come up. For IPSec to traverse the NAT, IPSec must be encapsulated in UDP. This is called NAT-T. Actually the question - is it possible to enable NAT-T on Win7? All I have seen about this is editing the registry, which does not help. How to solve the problem?

Answer 1

0_o Do you have Win7 as a gateway? Or I don't quite understand. Also, L2TP is not the same as IPsec. What made you think he was there?

Answer 2

Decided, if only because I looked in WireShark'e. Well, there is also a button "IPSec settings" where you can configure the pre-shared key. I have 7ka behind the gateway, consider that I am sitting in an Internet cafe and have no access to the router. XP normally connects to my server, but 7ka does not.

Answer 3

support.microsoft.com/kb/926179