Filtering on ServerHello TLS 1.0 negotations RRS feed

  • Question

  • Hi Everyone,

    What am I doing wrong using the following filter. I'm trying to find all client hellos with "registration" that are negotiating a TLS 1.0 ServerHello


    ContainsBin(FrameData, ASCII, "registration") and tls.TlsRecLayer.TlsRecordLayer.SSLHandshake.HandShake.ServerHello.Version.Minor == 0x1

    Nothing is returned despite there being plenty of clienthello with "registration"


    Thursday, September 5, 2019 2:30 AM

All replies

  • Hi , DoJu

    Have you checked TLS negotiation and capture packets?

    You can refer this to check.

    Also ,you can refer how to capture TLS packets?

    Other posts for your reference:



    Best regards,


    MSDN Community Support
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    Thursday, September 5, 2019 8:19 AM
  • Hello DoJu,

    It might be a trivial observation, but your free-hand text refers to client hellos and the Network Monitor filter expression refers to a server hello version number field.

    A similar expression (with different text and using ClientHello rather than ServerHello) works for me. The filter expressions always apply to single packets, without regard to other packets (even in the same TCP connection); one cannot create a filter that refers to the text (SNI?) in some earlier packet (e.g. the client hello) and a version number in some later packet (e.g. the server hello).


    Thursday, September 5, 2019 9:54 AM