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

[Valentí Jové]

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