I need to install a firewall on my grandmother's computer which is networked. Is there anything special I might need to do since the computer is networked? I figure I'll have to allow the IP addresses of the network (or whatever). I know nothing about networks.
I haven't decided on a firewall for her. I'm thinking about Outpost free firewall or Kerio/Sunbelt free firewall. I'm not sure if this will be installed on the main computer or one of the other ones.
I read somewhere that the Outpost free firewall isn't suitable for a networked computer. Is that true? Is there a free firewall that will work on a networked computer?