[Openswan Users] OpenSwan, Windows, NAT-t, L2TP, not working.

Valentí Jové vjove at genos.accio.com
Thu Jul 8 11:10:19 CEST 2004

Checked with rp-l2tp. Same results.

Client NAT: working
Server NAT / Both NATed: IPSec stablished, L2TP traffic not reaching 
the daemon.

Quoting Jacco de Leeuw <jacco2 at dds.nl>:

> Valentí Jové wrote:
>> I'm trying to configure an IPSEC/L2TP tunnel between an 
>> FreeSwan/Openswan Linux
>> and a Windows roadwarrior, both of them are natted.
>> This is kernel 2.6, and we've tried with patched vanilla kernels, 
>> Suse kernels,
> l2tpd is known not to work with kernel 2.6's IPsec implementation when there
> is NAT. Possibly because of buggy tty support.
> rp-l2tp reportedly does work.
> I have also never tested with double NAT (both client and server NATed).
> I suggest you try first without NAT, e.g. in a test lab.
> Jacco
> --
> Jacco de Leeuw                         mailto:jacco2 at dds.nl
> Zaandam, The Netherlands           http://www.jacco2.dds.nl

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