COMPUTER NETWORKING

NETWORK SECURITY

INTRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Choose the best definition of a firewall
A
A firewall is software the protects a network
B
A firewall is a hardware device that protects a network
C
A firewall intercepts and checks packets of data
D
A firewall checks outgoing packets of data
Explanation: 

Detailed explanation-1: -The correct answer is A system that prevents unauthorized access to a private network. A firewall is a system that prevents unauthorized access to a private network.

Detailed explanation-2: -A firewall establishes a border between an external network and the network it guards. It is inserted inline across a network connection and inspects all packets entering and leaving the guarded network. As it inspects, it uses a set of pre-configured rules to distinguish between benign and malicious packets.

There is 1 question to complete.