Software Firewall

gbowden · 01-25-2006, 08:33 PM

Is there a Software Firewall for Linux which blocks programs from accessing the internet.

For Example: Allow me to block kopete from accessing the internet but, choose which other applications can access the internet.

megaspaz · 01-25-2006, 08:58 PM

I'm not sure about on a program basis, but iptables is a firewall that you can set rules for ports. If you google a bit, you'll find tuts on setting up iptables as well as some graphical frontends.

linuxbotx · 01-26-2006, 01:05 AM

Check out FireStarter www.fs-security.com Its a nice GUI Firewall that uses IPTables. Probably the best answer you'll get for Linux Firewalls.

ethics · 01-26-2006, 06:35 AM

guardog can do per app but i think it only does the ones pre-programmed, you can always just use iptables or firestarter (a GUI frontend) and block the ports it is transmitting on

rickh · 01-26-2006, 06:39 AM

I assume you're talking about something like Zone Alarm does on Windows. I don't think Firestarter or Guarddog will do it, and iptables by itself is pretty strenuous unless you're fairly sophisticated. You might check out Shorewall. I looked it over at one point, but decided it was more advanced than my needs. It did appear to me that it might do that, though.

gbowden · 01-26-2006, 07:45 AM

I'll give Shorewall a try.
I was looking for a program like Zone Alarm for windows.

linuxbotx · 01-26-2006, 10:00 AM

Shorewall uses IPTables also. There is nothing for linux like Zone Alarm or other Windows based firewalls. If you really want a secure network, just close all your ports in IPTables and only open up the ones you really need. IE only open up HTTP (port 80) and HTTPS (port 443). Then you can open up one port at a time when needed. Its not as pretty, but trust me, it works wonders.