Update to Mitigate MS08-037 UDP Behavior Across NAT for Forefront Threat Management Gateway (TMG), Medium Business Edition (MBE)

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    This update causes TMG MBE to use random source ports for UDP sessions created by access rules which serve hosts in networks for which Forefront TMG MBE defines a network address translation (NAT) relationship.
    • Version:


      File Name:


      Date Published:


      File Size:

      2.6 MB

        This update resolves the issue described in Microsoft Article 956910, DNS queries that are sent across a firewall do not use random source ports after you install security update 953230 (MS08-037). With this update, Forefront TMG MBE allocates a large set of random UDP ports and then selects a port from this set for use in new UDP sessions.

        You can disable it programmatically (there is no user interface).
    • Supported Operating System

      Windows Server 2008

        • Forefront Threat Management Gateway (TMG), Medium Business Edition (MBE), shipped with Windows Essential Business Server 2008 and standalone
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