[Openswan Users] Certificate exchange but no l2tp

[Oliver Tomkins]

Hello,

got a curious problem here.

Our test set up works fine - we simulate an external machine (windows 
2000)connecting to an ipsec box which then uses NAT to forward packets 
on to the l2tp box on the internal subnet.  This works without any problems.

However as soon as we move the machines into the "real world" it stops 
working.

We can see traffic coming into the ipsec machine and the SA coming up

 >> IPsec SA established {ESP=>0x5ecdf205 <0x0e62b603}

However tcpdump doesn't show any of the packets been rewritten to the 
l2tp machine and our firewall counters don't show any packets coming 
through there.  The client then kills the tunnel as it is expected l2tp 
as well as the tunnel.

Anybody had a similar issue?

Thanks,

Olly.








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