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312-50V9 · Question #197

You are attempting to man-in-the-middle a session. Which protocol will allow you to guess a sequence number?

The correct answer is A. TCP. At the establishment of a TCP session the client starts by sending a SYN-packet (SYN=synchronize) with a sequence number. To hijack a session it is required to send a packet with a right seq-number, otherwise they are dropped.

Session Hijacking

Question

You are attempting to man-in-the-middle a session. Which protocol will allow you to guess a sequence number?

Options

  • ATCP
  • BUPD
  • CICMP
  • DUPX

How the community answered

(40 responses)
  • A
    90% (36)
  • B
    3% (1)
  • C
    3% (1)
  • D
    5% (2)

Explanation

At the establishment of a TCP session the client starts by sending a SYN-packet (SYN=synchronize) with a sequence number. To hijack a session it is required to send a packet with a right seq-number, otherwise they are dropped.

Topics

#TCP sequence numbers#session hijacking#MITM#TCP protocol

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