[Openswan Users] Problem with some ADSL routers

Jacco de Leeuw jacco2 at dds.nl
Tue Mar 29 22:40:54 CEST 2005

Marcelo Mercio Dandrea wrote:

> I´m using openswan with L2TP windows road-warriors, as explained on 
> the Nate Carson´s page. It almost always works, and after several tests, 
> I found out that when it doesnt, its because the windows notebook is 
> behind some ADSL modens (like DSLINK 200) configured to do NAPT 

If you are using Nate's example ipsec.conf then you need to add this
line to the "roadwarrior-l2tp" connection:


If the ADSL modem is doing IPsec passthrough then you need to disable
this. It is incompatible with NAT-Traversal.

Jacco de Leeuw                         mailto:jacco2 at dds.nl
Zaandam, The Netherlands           http://www.jacco2.dds.nl

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