Smoothwall Express 3.0 with Multiple NAT
This is a must have for any Smoothwall Express Setup. This mod gives you full control of your interfaces including multiple IP addresses, ports and mac control:
The mod gives ultimate control with the following:
1. Specify origin source IP/Network
2. Specify the origin/destination ports to be open for your specific IP/Network
e.g. Open access for the IP 188.8.131.523 on port 57 to your IP xxx.xxx.xxx.xxx on port 22
To install the mod simply run the following from command line:
**NOTE: Smoothwall Express 3.0 should be up to and including update 9 – Maintenance > Updates.
Log back into the Smoothwall GUI and you will now see the Full Firewall Control interface.
For further reading take a look at below link: