[Openswan Users] Fedora Core2, Openswan 2.2.x, VPN & NAT-T

[Roberto Fichera]

Hi All,

I would like to configure a box with Fedora Core2 (kernel 2.6.8-1.521) + 
Openswan 2.2.x
as VPN gateway behind to an Zyxel 652R-11 ADSL router, but I don't know
how to setup Openswan to make it work. What ipsec.conf I've to write?
I guess that I've to use some NAT-T config. My configuration is the follow :

Head Quarter:
FC2+OW22 (192.168.0.253) <--> Z652R11( LAN:192.168.0.254, 
WAN:1StaticIP)  <--> Internet

Office A:
Internet <--> Z652R11( WAN:1StaticIP, LAN:192.168.1.254) <---> 192.168.1.0/24

Office B:
Internet <--> Z652R11( WAN:1StaticIP, LAN:192.168.2.254) <---> 192.168.2.0/24

and so on ;-)!

The Zyxel have the default NAT setup as 192.168.0.253, on HQ side, so every 
packet should be
redirected on FC2 box, I hope ;-)!

Thanks in advance.

Roberto Fichera.