ok, after doing a lot of test to solve this (http://www.antionline.com/showthread...hreadid=259536)
Client told me that he is changing to use smoothwall on his clients. So, the problem is gone, since smoothwall has enough "remote" management capabilities. At least, i received the payment for the consulting....

BTW, Im trying to install smoothwall to replace my current soft firewall (*nix with iptables, manually configured).
--- Current config -----
I have a pc with JUST ONE nic and im using iptables to protect my home network and share internet connection.
I have a xdsl connection thru pppoe. So, Internet is at "ppp0" and local network is "eth0".
Until today is working fine (i hope so!)
---- Smoothwall
Now back on issue. I cant find a way to do that on smoothwall! All "model" configurations require 2 "physical" interfaces (or 3). I would like to use it just im using nowadays. ONE eth NIC, ONE "logical" adapter (ppp0).

Ideas what am i doing wrong?