Home » ECCouncil » 312-50 » Which mode of IPSec should you use to assure security and confidentiality of data within the same LAN?
Which mode of IPSec should you use to assure security and confidentiality of data within the same LAN?
A. ESP transport mode
B. AH permiscuous
C. ESP confidential
D. AH Tunnel mode
Correct Answer: A
Explanation/Reference:
When transport mode is used, IPSec encrypts only the IP payload. Transport mode provides the protection of an IP payload through an AH or ESP header.
Encapsulating Security Payload (ESP) provides confidentiality (in addition to authentication, integrity, and anti-replay protection) for the IP payload.
InAnswers:
B: Authentication Header (AH) provides authentication, integrity, and anti-replay protection for the entire packet (both the IP header and the data payload carried in the packet). It does not provide confidentiality, which means that it does not encrypt the data. References: https://technet.microsoft.com/en-us/library/cc739674 (v=ws.10).aspx
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