CompTIA Network+ Practice Test

The protocol that is not related to IPsec is Hypertext Transfer Protocol (HTTP). IPsec is a suite of protocols designed to secure internet protocol communications by authenticating and encrypting each IP packet in a communication session. It utilizes various protocols to achieve these security goals.

Encapsulation Security Payload (ESP) and Authentication Header (AH) are both integral components of IPsec. ESP provides encryption and confidentiality, while AH is focused on data integrity and authentication. Internet Key Exchange (IKE) is another crucial protocol related to IPsec, as it is responsible for setting up a security association and managing the keys used for encryption.

On the other hand, HTTP is a protocol used for transmitting hypertext over the web, enabling the transfer of web pages and resources, but it does not provide the security mechanisms related to IPsec. Therefore, it is not involved in securing IP communications like the other mentioned protocols.