350-029 · Question #341
How many messages does internet Key Exchange use to negotiate SA characteristics when running in main mode?
The correct answer is B. 6 messages. The Main Mode is an exchange in the first phase of IKE/ISAKMP (The ISAKMP Identity Protection Exchange) the first two messages are used for negotiating the security policy for the exchange. The next two messages are used for the Diffie-Hellman keying material exchange. The last…
Question
How many messages does internet Key Exchange use to negotiate SA characteristics when running in main mode?
Options
- A3 messages
- B6 messages
- C4 messages
- D2 messages
- E5 messages
How the community answered
(25 responses)- A12% (3)
- B76% (19)
- D8% (2)
- E4% (1)
Explanation
The Main Mode is an exchange in the first phase of IKE/ISAKMP (The ISAKMP Identity Protection Exchange) the first two messages are used for negotiating the security policy for the exchange. The next two messages are used for the Diffie-Hellman keying material exchange. The last two messages are used for authenticating the peers with signatures or hashes and optional certificates. Last two authentication messages are encrypted with the previously negotiated key and the identities of the parties are protected from eavesdroppers.
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