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Which of the following security devices can be replicat…

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?

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A.
Sniffer

B.
Router

C.
Firewall

D.
Switch

Explanation:
Ip tables are a user-space application program that allows a system administrator to configure the tables
provided by the Linux kernel firewall and the chains and rules it stores.
Incorrect Answers:
A: A sniffer is a tool used in the process of monitoring the data that is transmitted across a network.
B, D: A router is connected to two or more data lines from different networks, whereas a network switch is
connected to data lines from one single network. These may include a firewall, but not by default.

Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis, 2014,
p. 342
http://en.wikipedia.org/wiki/Iptables
http://en.wikipedia.org/wiki/Router_(computing)

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