By examining the “state” and “context” of the incoming data packets, it helps to track the protocols
that are considered “connectionless”, such as UDP-based applications and Remote Procedure Calls
(RPC). This type of firewall system is used in:

A.
first generation firewall systems

B.
second generation firewall systems

C.
third generation firewall systems

D.
fourth generation firewall systems

Explanation:
“Stateful Inspection Characteristics The firewall maintains a state table that tracks each and every
communication channel. Frames are analyzed at all communication layers. It provides a high degree
of security and does not introduce the performance hit that proxy firewalls introduce. It is scaleable
and transparent to users It provides data tracking for tracking connectionless protocols such as UDP
and ICMP The stat and context of the data within the packets are stored and updated continuously.
It is considered a third-generation firewall.” Pg. 375 Shon Harris: All-in-One CISSP Certification Not A:
“Packet filtering is the first generation firewall—that is, it was the first type that was created and
used, and other types were developed fall into different generations.” Pg 373 Shon Harris: All-inOne CISSP Certification