Intrusion Detection Question?

[Etherphyte]

Hey gang,
I am looking for your opinions on what the best Intrusion detection software is. I only really know of Snort and Tripwire. What do you think is the best software to check for intrusion detection?
Thanks,
Adam
etherphyte.com (http://www.etherphyte.com)

[Tyr-7BE]

There's always TCP Wrappers for logging and denying people access.

[DMR]

There are some NHFs (http://www.linuxnewbie.org/nhf/intel/security/index.html) on security that might help.