win2k file server as router/firewall
i've got a win2k file server. i'd like to setup this computer as a nat router and firewall for the lan. however, i'm having trouble getting everything to work properly.
the server has two nics. a dsl modem is hooked up to one and the other is hooked up to a switch. my problem is that i can't find the balance that allows local network traffic to flow freely while restricting external traffic. i'd like to use ipsec for the firewall, but can i use ipsec with legacy oses on the lan and devices such as network printers? i read from microsoft that only 2k and above have ipsec support.
anyone have a suggestion on the best way to go about doing this? i've tried lots of third-party software... nothing wants to work right. i'm about out of hair to pull.
thanks. :-)