CompTIA Security+ (SY0-401) — Question 2

Which of the following security devices can be replicated on a Linux based computer using IP tables to inspect and properly handle network based traffic?

Answer options

• A. Sniffer
• B. Router
• C. Firewall
• D. Switch

Correct answer: C

Explanation

The correct answer is C, as a firewall is specifically designed to control incoming and outgoing network traffic based on predetermined security rules, which can be configured using IP tables on a Linux system. Options A, B, and D do not serve the same purpose; a sniffer captures traffic, a router directs it, and a switch connects devices within a network but does not filter traffic based on security rules.