[TriLUG] iptables and VPNs

Tarus Balog tarus at opennms.org
Fri Feb 6 15:58:47 EST 2004


Gang:

Anyone have experience fixing up VPN access through an iptables-based  
firewall? We have a linux box that acts like a router, and I was  
recently in need of a VPN connection through that firewall to a  
client's site. The VPN was by NORTEL, and I had to use the Contivity  
VPN client for Windows to access it. I *think* it was IKE based, but I  
am not even sure what that means (grin).

My connection would establish, but then I would start losing packets  
(verified by repeated pings) until nothing would go through, over the  
span of about five minutes. I moved my system outside the firewall and  
these problems went away.

Clues?

-T

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