TCP Hijacks - False Positives

[jono29 () gmail com]

Can anyone please tell me some of the causes of false positives on the Cisco 4250 IDS sensors. The obvious signs that I 
know of are idle telnet sessions and tcp connections that have remained open for a long period of time. Any more help 
would be much appreciated.

Thanks in advance

------------------------------------------------------------------------
Test Your IDS

Is your IDS deployed correctly?
Find out quickly and easily by testing it 
with real-world attacks from CORE IMPACT.
Go to http://www.securityfocus.com/sponsor/CoreSecurity_focus-ids_040708 
to learn more.
------------------------------------------------------------------------