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Cisco Security

Advanced DNP3 - Device Under Local Control

 
Signature ID: 1423/0
Original Release:S691
Release:S691 (download)
Original Release Date:2013 January 24
Latest Release Date:2013 January 24
Default Enabled:False
Default Retired:True
Alarm Severity:Informational
Fidelity:60 

Description

Signature is to detect the IIN Response Flag indicating the device is under local control, meaning that the OutStation PLC is not being managed by DNP3 protocol communications any longer. It may be that the device is now being managed by another protocol, in which case that protocol's management interface will need to be consulted. The device may need to be reset to restore DNP3 management. In some cases the device may need to be physically managed to restore DNP3 protocol control. This signature should be activated to be sure the Outstion devies are not changed without the proper Change control procedure. Signature checks for: * DNP3 Start Delimiter * Minimum size for an Response message + IIN flags.* Currently the Response functions: ** 0x81 Response function ** 0x82 Unsolicited Resonse** 0x83 Authentication Response ** 0x84 Unsolicited Authentication Response You are entitled to use this signature only if you have purchased an IPS SCADA Signature License.

Recommended Filter

There are no suggested filters.

Benign Triggers

There are no known benign triggers.

IntelliShield Alerts

IntelliShield ID Headline VersionCVSS ScoreLast Published
872Supervisory Control And Data Acquisition (SCADA) Error Messages12000 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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