You are a network administrator tasked with implementing IPsec to secure data transmission over the company's unprotected TCP$/$IP network.

You decide to use the Encapsulating Security Payload $($ESP$)$ protocol for its confidentiality feature. However, you are unsure whether to use transport mode or tunnel mode. The company's network includes several routers and switches, and it also uses Network Address Translation $($NAT$).$

Which mode should you choose and why?

answer

Transport mode because it only encrypts the payload, making it faster and more efficient.

Tunnel mode because it is more compatible with NAT.

Tunnel mode because it encrypts the entire packet, providing an extra layer of security.

Transport mode because it is more compatible with NAT.