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IPTables and VPN

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GlenLynam

MIS
Jul 26, 2002
121
Hi All!

I am having trouble setting up my VPN with IPSec BUT i do have a strange set up ... here it is..

Internal Network - Watchguard - Linux - Internet - Host

Basically what happens is this, the watchguard box authenticates the VPN log ins and my linux box acts as a second firewall and a router. Using NAT

I have got it to work as far as the watchguard firebox authenticates the user via the linux firewall forwarding all the relevant data to it BUT when the watchguard sends a reply back to the client it isnt getting there. I think its my linux box which is blocking the data getting to the client.

Does anyone know of rules that will allow the data back out??

ps. The data ports the watchguard needs are ...
udp 500
ip 50 (ESP)
ip51 (AH)
 
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