IP Protocol Types

Question 1

What does Internet Control Message Protocol (ICMP) do?

Answer 1

Used to communicate information about network connectivity issues back to the sender. Sands Datagrams.

Question 2

What does Generic Routing Encapsulation Do (GRE)?

Answer 2

Used as a simple and effective way to create a tunnel, called a GRE tunnel over a public network. Doesn’t Provide any Encryption by default.

Question 3

What does Internet Protocols Security (IPSec) do?

Answer 3

Used to protect one or more data flows between peers. Data confidentially lets you create and encrypt your tunnel to protect your data from prying eyes.

Question 4

What is an Authentication Header (AH)?

Answer 4

A protocol within IPSec that provides integrity and authentication.

Question 5

What is an Encapsulating Security Payload (ESP)?

Answer 5

Provides encryption and integrity for the data packets sent over IPsec