And do I need a recent computer for the linux one or an old one can do so? I mean something like Pentium 4 or Pentium D may fits? On 23/02/2012 10:58 PM, John R Pierce wrote: > On 02/23/12 12:47 PM, Wuxi Ixuw wrote: >> Actually I read many times that geek people used to use a Linux computer >> as a firewall for their network but never figured out how they do so. > install linux on a computer with two ethernet cards. connect eth0 to > your internet connection, and eth1 to your local network. configure > iptables firewall rules in the linux system. or install pfsense on that > same computer. > > >