I have a few computers on my network (company.ee) for which I want to disallow port 80 and port 21 connections outside .ee domain.
I mean that these computers would have full access but only inside .ee. So Linux should act as a gateway and prevent any traffic between those few computers and any computer's which is outside .ee domain ports 80 and 21.
And they all must use real IP-s because I sometimes want to make ftp server or game server on them.
ipchains doesn't allow to use DNS (i.e. I can't say there !ee port 80 DENY) or does it?