Article ID: 2654585 - View products that this article applies to.
Consider the following scenario:
In this scenario, you may experience an increase in the number of backlogged packets that are waiting to be processed. This could cause the queue of UDP traffic to lead to other alerts, such as a "SYN Attack" being triggered.
Note You can monitor the number of backlogged packets by looking at the following Performance Monitor counter:
A increase in the number of backlogged packets occurs because of a performance bottleneck when new firewall sessions are created.
To resolve this issue, install the hotfix package that is described in the following Microsoft Knowledge Base article:
(http://support.microsoft.com/kb/2649961/ )Rollup 1 for Forefront Threat Management Gateway (TMG) 2010 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about flood mitigation, visit the following Microsoft TechNet website:
Overview of flood mitigationFor more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
Article ID: 2654585 - Last Review: January 11, 2012 - Revision: 1.0