Mark works as a Network Administrator for BlueWell Inc. The company has a Windows-based
network. Mark has retained his services to perform a security assessment of the company’s network
that has various servers exposed to the Internet. So, it may be vulnerable to an attack. Mark is using
a single perimeter ?rewall, but he does not know if that is enough. He wants to review the situation
and make some reliable recommendations so that he can protect the data over company’s network.
Which of the following will Mark use to inspect network information on the basis of source and
destination address?

A.
Stateless packet inspection

B.
Tricky packet inspection

C.
Stateful packet inspection

D.
Reaction based packet inspection

Explanation:
Stateless inspection is used to add flexibility and scalability to network configuration. It is used to
inspect network information on the basis of source and destination address. In this inspecxtion
method, packets are inspected up to Layer 3 of the OSI model that is the network layer. It is able to
inspect source and destination IP addresses, and protocol source and destination ports.

Answer C is incorrect. Stateful packet inspection firewall is a type of hardware firewall used to track
information about the applications sending the packets, contents of the packet and state of the
connection. This process permits the firewall to make decisions about packets based on context and
administrator defined rules.