L2TP vs GRE tunneling

[tom_woodard]

We have an extranet VPN based on GRE tunnels. However we have had some issues with GRE terminating properly behind firewalls and are considering a move to straight IPsec tunnels. However is is possible to use L2TP w/ IPsec as a direct site-to-site tunnel instead of an access dialup tunnel?

The only L2TP examples I have seen are for dial-up users. Can L2TP be used as a straight Layer3 routing tunnel? If so, how?

[kbeltz]

I think I read that the Windows 2000 IPSEC is really L2TP over IPSEC. I know that would be independent of the network connection (dialup, LAN , etc.). Has anyone out there configured it yet to terminate at a router? I think Cisco has client software available that does that if you can’t do it within Windows 2000.