[SLUG] Internet Gateway/Router

[Terry Denovan]

Hi SLUG, I am wanting to know if its possible to setup a Linux Box that will allow me to connect 4 ADSL Connections to my Internal Network, and use only 1 internal gateway. I have attached a basic diagram on what I would like to achieve, As you will see from diagram, I have used false IP’s. Essentially, what I would like to do is have the following ports from the internal network go…   SMTP (25) – eth1 FTP (21) eth2 HTTP (80) eth3 VPN (5000) eth4   And similar if you are on the internet, I want to open port 25 (SMTP) on all the internet connections and have that forwarded to one Internal IP Address, and open port 80 (http) on eth3, and open port 5000 (VPN) on eth4. eth2 is purely for Staff to use FTP in or Out.   So Basically, the questions are Is it possible? If Possible, What software should I be using? And is it hard? If it’s hard, can someone out there do it, and I pay you for it?   Kind Regards, Terry Denovan

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