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Cisco Security

DNS Query For ROOT

 
Signature ID: 15016/0
Original Release:S378
Release:S593 (download)
Original Release Date:2009 January 23
Latest Release Date:2011 September 07
Default Enabled:False
Default Retired:True
Alarm Severity:High
Fidelity:80 

Description

This signature detects DNS queries for the ROOT servers. This has recently been used in distributed denial of server attacks. See http://isc.sans.org/diary.html?storyid=5713 for further information.

Recommended Filter

There are no suggested filters.

Benign Triggers

This can be legitimate traffic for internal hosts.

IntelliShield Alerts

IntelliShield ID Headline VersionCVSS ScoreLast Published
153Network Flooding Activity12000 May 01 16:00 GMT

Download

To download this and other IPS update files, please go to Cisco Secure Software Download.

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