IPS 5.0 change action causes false positives

Hello

I've updated a 4215 and 4 port running 4.1 to 5.0. The unit is not "inline", always using a single sniff int when I add the (reset) action on a GIS (5126) or that relate to IIS and apply the change to the sensor starts go crazy picking off all kinds of web traffic as a hit and then resets the stream. Problem is that these are false positives... If I can go back to IDM and turn off the action of "reset" and use only the default value (alarm), the alarms keep coming. If I restart the sensor alarms stop.

What I don't understand is this signature has been activated before and its default action is 'alarm '... I never received any alarm.

As soon as I change the action for the alarm and reset becomes crazy? A sensor reboot solves the problem.

Someone at - it given the similar problems?

Thanks in advance

MK

MK

I think that you encounter a known, fixed bug in update 5.0 (2) has just been released. It looks like:

CSCeh36719 False positives after upgrading to 5.0 IPS

It affects signatures in HTTP after engine they were listening. Try to install the service pack 5.0 (2) located here:

http://www.Cisco.com/cgi-bin/tablebuild.pl/ips5

SC

Tags: Cisco Security

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