Hi,
I'm a shorewall novice. I want to set up a server at home mostly to
practise ahead of purchasing a hosted service. I have an old computer that
I will use. It will sit behind my D-link router, and the router will be
forward packets destined for an arbitrary large port number (as my ISP
blocks ports < 1024) to the server computer.
I have a spare NIC and thought that I could add that and use one NIC to
receive incoming traffic and the other for local connections from my
computer. The first NIC could then have a firewall setup to block all
incoming traffic other than the special port number, while the other was
unfirewalled so that it was easy to connect too. In practise though both
NICs will be connected to the same switch that all the computers are
connected to.
Is that a risky setup in itself; is it in fact redundant to use a firewall
behind the router? Do I, and can I, prevent traffic from passing from NIC
to the other inside the computer?
HB
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