Intrustion Detection Application

[funkfresh01]

I have Ubuntu 8.04 Hardy Herson. I would like to secure my OS with a good Intrusion Detection Application with a good GUI and alerts you when someone tries to break in and gain access. I did an apt-cache search intrusion and found a lot of choices. I am inquiring for some good thoughts and intelligent suggestions. Thank you.

[linux_evangelist]

My best recommendation is Kismet. It doesn't have a gui, but it is very powerful, and highly regarded in the Linux community. You might also use Tripwire to detect when someone tries to alter binaries or system files.

[cariboo]

Have a look at the Intrusion Detection Sticky, it should answer most of your questions.