[Openswan Users] Tunnels come up, but not all traffic goesthrough

Nate Carlson natecars at natecarlson.com
Thu Jun 10 10:57:18 CEST 2004


On Thu, 10 Jun 2004, Jacco de Leeuw wrote:
> I don't know if you can use this but Chris Andrews wrote that he uses
> fwmark.
> 
>    Marks applied to encrypted packets remain set on the unencrypted packets,
>    and we can use this to determine which packets arrived via the IPSec SA. The
>    'mark' is internal to the kernel, and can't be set on packets outside of the
>    system, so it's safe to use this match.
> 
>    iptables -t mangle -A PREROUTING -i eth0 -p esp -j MARK --set-mark 1
>    iptables -A INPUT -i eth0 -m mark --mark 1 -j ACCEPT
> 
> http://www.funknet.org/doc/tunnel/l2tp.html

Hmm, yeah, that makes sense - I'll have to give that a shot. Thanks!

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| nate carlson | natecars at natecarlson.com | http://www.natecarlson.com |
|       depriving some poor village of its idiot since 1981            |
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