Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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this can be done - You want IP Masquerading (AKA NAT)!! This will do this for you... Have a look at http://www.linuxdoc.org/HOWTO/IP-Masquerade-HOWTO.html for details. You basically just get both network cards running then, enable masquerading (2 commands) as per the howto and enable forwarding (as per howto, 1 command) then set this box as your default gateway and that should be it.
However, I already have masquerading working on the linux box and it is not doing what I need.
I need to be able to address my computer on the LAN then the external IP address. This means that all the traffic directed to the public IP address (external) has to pass though the linux box and routed to my local computer. This makes the linux box transparent.
Now I understand... What services do you need to make available? It sounds like you need to have some sort of port forwarding working, so access to 12.232.14.6:80 gets passed through to 192.168.10.16:80 kind of thing. Either that or you could enable masquerading the 'other way', so any connections that come in to 12.232.14.6 get masqueraded back into the network, although this will give you serious security issues and I'm not sure what the return path of your packets would be.
Originally posted by teeno I just can’t understand why the IP address cannot be map though.
Its becuase you can't set a route to your internal IP addresses as they're private address space... Unfortunately I can't offer any references for the masq option, its was just thought really.
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