[Openswan Users] NAT Traversal interops

Paul Wouters paul at xelerance.com
Tue Jul 28 15:24:45 EDT 2009

On Tue, 28 Jul 2009, John Gorham (DPL) wrote:

> I did some looking around on the Wiki and mailing list archives. The only
> document addressing NAT Traversal interops was from August 2006
> (http://wiki.openswan.org/index.php/Openswan/NATTraversal).
> Question: Any updates to the 2006 interop findings (as reported below)??

No but things went from people implementing NAT-T drafts, to people
actually implementing the final version. RFC-3947

> Known good interops:
>  - Openswan to Openswan
>  - Openswan to Cisco VPN 3000
>  - Openswan to FreeS/WAN with NAT-T from http://open-source.arkoon.net
>  - Openswan to StrongSwan? (provided you patch your kernel) from
> http://www.strongswan.org/
>  - Openswan to SSH Sentinel
>  - Openswan to SafeNet?
>  - Openswan to Microsoft Windows 2000/XP(updates required).
> Unknown:
>  - Openswan to Cisco IOS or PIX

Those should all work. So should OSX.

>  - Openswan to Nortel

I wouldn't take any bets on Nortel really :)


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