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TCP timestamp is disabled.

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    Hi, I would like to know TCP timestamp is disabled by default when <g class="gr_ gr_6 gr-alert gr_gramm gr_inline_cards gr_run_anim Grammar multiReplace" data-gr-id="6" id="6">installed</g> the Microsoft windows2008 R2?

    Thank you



    Monday, July 3, 2017 3:00 AM
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    Hi,

    >TCP timestamps are disabled by default. You can enable TCP timestamps by changing the value of the Tcp1323Opts registry entry (HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters).

    Quote from “Transmission Control Protocol”:
    https://technet.microsoft.com/en-us/library/cc940037.aspx

    Value Name: Tcp1323Opts
    Value Type: DWORD (32-bit) Value
    Valid  Data: 0 or 2
    0 (disable the use of the TCP timestamps option)
    2 (enable the use of the TCP timestamps option)

    In general, you can use network monitoring tool to capture packets and have a further identification about the TCP timestamp staue.

    Best Regards, 
    Eve Wang

    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Thursday, July 6, 2017 5:33 AM
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    Hi,

    I am checking to see how things are going there on this issue. Please let me know if you would like further assistance.

    You can click “Mark as answer” if the reply is helpful. It would make this reply to the top and easier to be found for other people who has the similar problem.

    Best Regards,
    Eve Wang

    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Monday, July 17, 2017 7:25 AM
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