Mspress Ipsec

Review question:

Which mode would you use to protect communications between an Ipsec-enabled e-mail client and an email server on a private network?

a. Transport mode
b. Tunnel mode

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Comments

Psoasman

Probably tunnel mode, which protects the entire packet on its way through the entire network, as transport would be between 2 hosts on the network.

dynamik

Transport. You'd use tunnel for things like connecting two sites across a WAN.

Edit: Psoasman, it sounds like both of those reside on the same LAN.

Psoasman

...oh duh

I missed that part.

Mikdilly

dynamik wrote: »

Transport. You'd use tunnel for things like connecting two sites across a WAN.

Edit: Psoasman, it sounds like both of those reside on the same LAN.

Technically, wouldn't it be neither as the question doesn't specify that the email server is ipsec enabled? Or if the the server isn't ipsec enabled, it would have to be be tunnel mode as the server would not be on the same network as the client and the secured traffic would have to be between the client and an ipsec gateway on the private network containing the email server?

dynamik

I guess it depends on how you read the question. The important thing to take away is that you'd want to use transport if hosts are communicating with each other and tunnel if you're connecting different networks.