Hi
The line says:
rdr on ste0 proto esp from any to 192.168.1.20 port 500 -> 192.168.2.100
port 500
I don't know if port 500 is the right port to use with esp.
But It does not matter what port i use.
So, you need 2 rules: ome for protocol ESP, and one for UPD/500 (that is IKE).
(I think that here you can find some infos.... http://wiki.openswan.org/index.php/Firewalls)
Tom
