HI, Maybe in my original mail i wasn't very clear judging from the responses i got...so i'll try one more time.
I wasn't asking what to do in windows...although i did mention windows which probably made everyone run for the hills:) My question was about linux and how to accomplish security on application level, like what happens in windows with a personal firewall. Because i don't understand how i can achieve full security when opening ports...like port 80 for the web or 110 and so on. Cause as far as i can understand reading all the IPchains documentation if i open that port in linux it wil be open for any application which uses that port....and i can't specify that only mozzila or netscape can use that port and any other app can use that port to transfer information. And if there is no need for security on application level why is that? Cheers, Willem