[Openswan Users] IPSec, Windows XP/2000 and Dead Peer Detection

Andrej Trobentar andrej.trobentar at rikom.si
Fri Oct 14 21:51:26 CEST 2005


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Paul Wouters wrote:
>
> A new dr should be released today that address a bug on 2.4.31 kernels and
> NAT-T. Perhaps that will fix your problem.
> 
> Paul

The 2.4.2dr2 compiles without problems and my static tunnels work
without problems - with no changes to ipsec.conf! BUT my roadwarriors
don't work anymore :(

At the windows command prompt at a roadwarrior (no NAT):
"ping <internal_host>" works
"ping -l <anything greater than 487> <internal_host>" DOESN'T work

I have tried to decrease the MTU and MRU settings in options.l2tpd as
mentioned in the theme
"http://lists.openswan.org/pipermail/users/2005-September/006392.html",
but with no luck. Normal ping works, but if I increase the packet size I
don't get a response. So http browsing, ssh, telnet, ... doesn't work.
I coudn't test a roadwarrior behind NAT yet, but I guess the problem
would remain.

Test done on kernel 2.4.31, openswan 2.4.2dr2, l2tpd-0.69-13jdl (a new
SRPM send to me by Jacco yesterday).

Any ideas?

- --
Thanks,

	Andrej.
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