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TMG changes TCP sequence numbers

    Question

  • Hi everyone,

    we use the TMG 2010 server as a firewall with two NICs in routing mode. I have observed that the TMG changes the sequence number of outgoing TCP packets. This is problematic for our application. ATM I think the TMG relies on this "feature" for its IPS. Are there other reasons why the TMG would change the sequence number?

    Is there a way to turn this off?

    What I have tried so far is turning off all IPS/IDS features and disabiling Kernel Mode Forwarding, which had no influence on the sequence numbers.

    Thank you,

    Moritz

    Monday, July 15, 2013 8:47 AM

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