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Cisco Bug: CSCuk54794 - The rate limiter appears in the documentation as the last block

Last Modified

Feb 22, 2014

Products (1)

  • Cisco Guard DDoS Mitigation Appliances

Known Affected Releases


Description (partial)

Diagrams that appear in the documentation place the rate limiter module as the last processing 
block in the Guard. In the actual implementation of release 3.0.8 the rate limiter is done before 
the sampling of the traffic. Only traffic that is forwarded to the zone is sampled and passed to 
the recognition thus if all malicious traffic is dropped by the rate limiter no dynamic filter are 
created during attack. 

Relevant only if the total zone rate limiter is configred or there exist a user filter with a rate 
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