Double NAT, IPtables and bridging
I've just got a question, and I need it answered BEFORE I begin with extensive work.
I've got ADSL at home with a 4 ports modem/router (supports NAT). Behind that router I
want to place 1 PC, with 2 NIC's. I want THAT PC (with SMOOTHWALL.org) installed to serve
and protect my entire network. (with NAT)
Furthermore I want to run an FTP server on my LAN, that can be accessed from the outside.
I also want to run a VPN server, and IRCbot and a IPtables firewall on my PC (2 NIC's).
How can I do this the fastest? I heard someone mention bridging, but that can be done by
IPtables directly, I think.
Can the DHCPserver on the modem/router give away IPadresses on my LAN or do I need my
PC (2 NIC's) to do that? Because it will be kind of a double NAT situation.
What's the best way to do all of this? (especially with gateway IP's etcetera)