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Invalid IP Datagram Length is reported in the Firewall events of Vulnerability Protection

    • Updated:
    • 29 Sep 2017
    • Product/Version:
    • Vulnerability Protection 2.0
    • Platform:
    • Windows 2003 Server R2
    • Windows 2008 Enterprise 64-bit
    • Windows 2008 Server R2
    • Windows 2008 Server R2 Enterprise
    • Windows 2012 Server Essential R2
    • Windows 2012 Standard R2
    • Windows 7 32-Bit
    • Windows 7 64-Bit
    • Windows 8 32-Bit
    • Windows 8 64-Bit
    • Windows 8.1 32-Bit
    • Windows 8.1 64-Bit
    • Windows Vista 32-bit
    • Windows Vista 64-bit
    • Windows XP Professional
    • Windows XP Professional 64-bit
    • Windows XP SP2 32-bit
    • Windows XP SP3 32-bit
Summary

When checking the Firewall Events in the Vulnerability Protection Manager (Events > Reports > Events > Firewall Events), the following event(s) can be seen:

Reason: Invalid IP Datagram Length  Action: Deny  Rank: 50  Direction: Outgoing  Frame Type: IPv6  

The issue is caused by the Vulnerability Protection Agent. It does not calculate the correct length for IPv6 LSO packets, so the packet will be dropped.

Details
Public

To resolve this issue, do the following:

  1. Ensure that your Vulnerability Protection Manager is version 2.0.8324 or later because the Vulnerability Protection Agent Hotfix is based on the Patch 3 Version. This patch can be downloaded here.
  2. Contact Trend Micro Technical Support to get the Vulnerability Protection Agent Hotfix Build 2.0.3.7884 which includes the fix for the Invalid IP Datagram Length issue.
  3. For instructions about how to upgrade Vulnerability Protection Manager and Vulnerability Protection Agent, please refer to the installation guide.
Premium
Internal
Rating:
Category:
Troubleshoot
Solution Id:
1117563
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