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Author(s) Olivier Bonaventure
Deadline No deadline
Submission limit No limitation
Category tags ssh

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A first look at ssh


Question 1: Affirmations

Looking at the trace above, select the affirmations below that are correct.

Question 2: A simple ssh trace

The attached packet trace was collected on a Linux server.


0000  9ab400166bad6e3d  00000000a000aaaa  
0010  00300000                            

0000  .´..k.n=......ªª
0010  .0..            
  • Transmission Control Protocol, Src Port: 39604, Dst Port: 22, Seq: 0, Len: 0
    • Source Port: 39604
      • Destination Port: 22
        • TCP Segment Len: 0
          • Sequence number: 0 (relative sequence number)
            • Acknowledgment number: 0
              • 1010 .... = Header Length: 40 bytes (10)
                • Window size value: 43690
                  • Calculated window size: 43690
                    • Checksum: 0x0030 [unverified]
                      • Urgent pointer: 0