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Cisco Security

Back Door Response (TCP 1524)

 
Signature ID: 9202/0
Original Release:S40
Release:S256 (download)
Original Release Date:2003 February 26
Latest Release Date:2006 October 30
Default Enabled:False
Default Retired:True
Alarm Severity:High
Fidelity:65 

Description

This signature fires upon detecting a TCP SYN/ACK packet from port 1524 which is a common backdoor placed on machines by worms and hackers.

Recommended Filter

Exclude systems running a valid service on the port in question as sources.

Benign Triggers

It is entirely possible that a machine is running a service on the same port as a known trojan.

IntelliShield Alerts

IntelliShield ID Headline VersionCVSS ScoreLast Published
1159Backdoors12007 May 01 03:00 GMT

Download

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

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