When testing firewall security, which type of tool stresses a system to discover if it will react improperly, fail, or reveal unknown vulnerabilities

Fuzzing

Explanation:

A firewall is a network security protocol that monitors and controls inbound and outbound traffic based on set aside security rules.

Generally, a firewall is used to control access to a computer or network, as it creates a barrier between a computer or a network and the internet in order to protect against unauthorized access. It is a security system pre-installed on most computers to essentially inspect data being transmitted to or from a computer.

Furthermore, firewalls are typically bidirectional, it checks all sent and received data and only allow authorized traffic through.

Fuzzing also referred to as fuzz testing can be defined as a software testing technique or method which typically involves inputting invalid, random or unexpected data into a computer system or software application so as to test, discover, and assess their security strength.

Hence, when testing a firewall security, fuzzing tool stresses a system to discover if it will react improperly, fail, or reveal unknown vulnerabilities (bugs) that could be exploited by unauthorized users such as a hacker.