Hi all,
I'm looking to set up an old box as a router/firewall running Linux in some form. I've looked at Smoothwall but it doesn't seem to do exactly what I want. I want to set up 3 private subnets, all of which will use this box as their gateway for Internet access using NAT, and a basic firewall to prevent uninvited IP traffic entering any of the subnets. So the box will have 4 NICs, with the following IP addresses:
eth0: <public IP> --> Internet (via DSL modem)
eth1: 192.168.1.1 --> subnet #1 (192.168.1.0/24)
eth2: 192.168.2.1 --> subnet #2 (192.168.2.0/24)
eth3: 192.168.3.1 --> subnet #3 (192.168.3.0/24)
However, I don't want any IP traffic at all flowing from one subnet to another (they will be in 3 separate flats in the same building, the occupants of which do not know each other).
Ideally, I'd also like to have a DHCP server running on the box to give out appropriate IP addresses to machines on each subnet.
Smoothwall seems to be geared towards the idea of protecting a single internal LAN (the 'green' interface) from the Internet (the 'red' interface), rather than multiple Internal LANs from the Internet *and* from each other. Does anyone know of a free distro that would allow me to build this sort of setup easily?
Many thanks in advance
