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SSL Question

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Can anyone answer this question from one of the mock exams?

SSL. What does it encrypt? (Choose one)
1) All TCP data but not TCP/IP or physical headers
2) physical data but not headers
3) IP data and not header
4) specific application fields but not protocol messages

No answer was not provided with the question.

Please reply.

Thanks,

Prasad
+Pie Number of slices to send: Send
I think (4) is the answer.

SSL runs over TCP/IP so it won't be carrying anything specific to TCP Header etc.
+Pie Number of slices to send: Send
http://www.infosecwriters.com/text_resources/pdf/ESP_Strengths_and_Weaknesses.pdf says on page 6:

SSL/TLS operate at the Transport layer of the OSI model, and only encrypt the TCP data not the TCP header. This allows intermediate devices to view and use the TCP state information.



That makes me lean towards option 1

Regards,
Dan
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