Example: you want to block/drop all packets with "configure" command aimed to 
configure IOS devices and carried over Telnet. You create a custom signature 
matching for first  4 characters of the "configure" command - conf

Signature Name - Stop_Bad_Command
Signature engine - String TCP
Event Action - Deny attacker inline and produce alert
Specify Min Match Length - Yes
Min Match Length - 4
Regex String - [cC][oO][nN][fF]
Service port - 23
Direction - To Service


Eugene



From: [email protected] 
[mailto:[email protected]] On Behalf Of Ananthan
Sent: 15 April 2012 21:36
To: [email protected]
Subject: [OSL | CCIE_Security] IPS Signature

Hi Experts,

I need to configure one signature that trigger when the specific user give a 
specific command. How can i configure? Could you please any suggestion ?
-Ananthan
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