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Old 03-19-2004, 09:23 PM   #1
Registered: Mar 2004
Location: Cary, NC
Distribution: Gentoo 1.4, Free BSD 5.2.1
Posts: 32

Rep: Reputation: 16
Firewall Question

Well 1 week in Linux and I'm loving it. It makes Windows look quite silly . I do have a question though: Where can I find a program which will alert me to intrusion attempts (similar to the way Nortons, Zone Alarm, and McAfee does)? I know ipchains does a great job but I also like to be able to monitor my connection personally as well (not really trusting ipchains). Also, I have it configured to Default settings on high. Is this sufficient or should I set special rules? According to my friends NMap scan she says I have 1 port filtered and the rest are closed (which is also far better than windows).

Last edited by SelaAragon; 03-19-2004 at 09:26 PM.
Old 03-20-2004, 12:22 AM   #2
Registered: Jan 2004
Location: /lost+found
Distribution: Slackware 14.2
Posts: 845

Rep: Reputation: 33
Well ipchains is considered to be depreciated and was updated with iptables; available at Snort is an IDS (intrusion detection system) used to monitor network trafic and can be downloaded at

Last edited by Linux~Powered; 03-20-2004 at 12:23 AM.
Old 03-20-2004, 01:05 AM   #3
Registered: Oct 2003
Location: Tucson, AZ
Distribution: Linux Mint
Posts: 194

Rep: Reputation: 32
If you want an easy to configure, distro agnostic, graphical tool for both your firewall and network monitoring, you might want to check out "firestarter".
Old 03-20-2004, 09:12 AM   #4
Registered: Aug 2003
Location: Ottawa
Distribution: Redhat 5.2, 6.0, 6.1, Mandrake 7.2, 8.0, 9.1, 9.2, 10.0, Gentoo, Debian 3.1r0
Posts: 224

Rep: Reputation: 30
I've always found PortSentry to be very good, much less complicated than SNORT... you can have it run a script that does whatever you like on a scan detection (I have mine auto-generating IPTables rules to ban the scanner...)

Check it out here:


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