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

[Valentí Jové]

Hi Jacco,


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'll try rp-l2tp and I'll let you know.




>
> 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.



We've tested these 3 configurations:

- client NAT: works
- server NAT: doesn't work
- both: doesn't work



Valentí