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

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A TLS trace


Question 1: A short TLS trace

Analyse the attached packet trace.


0000  c17201bb5a8899cf  00000000a0007080  
0010  18890000                            

0000  Ár.»Z..Ï......p.
0010  ....            
  • Transmission Control Protocol, Src Port: 49522, Dst Port: 443, Seq: 0, Len: 0
    • Source Port: 49522
      • Destination Port: 443
        • TCP Segment Len: 0
          • Sequence number: 0 (relative sequence number)
            • Acknowledgment number: 0
              • 1010 .... = Header Length: 40 bytes (10)
                • Window size value: 28800
                  • Calculated window size: 28800
                    • Checksum: 0x1889 [unverified]
                      • Urgent pointer: 0
                      Question 2: Cipher suites

                      How many different cipher suites are proposed by the client ?

                      Question 3: Server name

                      What is the name of the server contacted by the client ?

                      Question 4: Selected cipher suite

                      What is the cipher suite that has been selected by the server ?

                      Question 5: Application layer protocol

                      What is the application layer protocol used over this TLS session ?