IPSec

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Questions and Answers

What is IPSec?

A set of security protocols used at the network layer of the OSI model

What does IPSec do?

Secures data when communication is happening between two points over a network. To ensure the data transferred over the internet cannot be stolen by using authentication and encryption algorithms

How is IKE (internet Key Exchange) done?

Firstly, the two points will identify each other and negotiate the parameters for encryption methods and authentication. Then, it creates an IPSec tunnel.

What is the authentication header protocol?

A protocol that offers authentication and integrity Signup and view all the answers

What is the encapsulating security payload protocol?

A protocol that offers authentication, integrity, and encryption Signup and view all the answers

How is the data sent through IPSec prevented from being read or tampered with?

Sender and receiver must share a public or a private key to encrypt and decrypt the data. Signup and view all the answers

How does the transport mode of IPSec works?

An ESP header, ESP trailer, and ESP authenticator is added to the original packet. TCP header, Payload and ESP trailer are encrypted. Signup and view all the answers

When is transport mode used?

When two devices connect over the public internet Signup and view all the answers

How does the tunnel mode of IPSec work?

A New IP header is attached to the packet. The old IP header, TCP header, payload and ESP trailer is encrypted which provides more security Signup and view all the answers