FUNDAMENTALS OF COMPUTER

COMPUTER THREATS SECURITY

WHAT IS A FIREWALL IN NETWORK SECURITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Firewall to multiplex traffic from the internal network and then convey it to the wider network (MAN, WAN or Internet) as if the packet came from an IP address or several IP addresses.
A
Virtual Firewall
B
Stateful Firewall
C
Transparent Firewall
D
NAT Firewall
Explanation: 

Detailed explanation-1: -Network Address Translation (NAT) conserves IP addresses by enabling private IP networks using unregistered IP addresses to go online. Before NAT forwards packets between the networks it connects, it translates the private internal network addresses into legal, globally unique addresses.

Detailed explanation-2: -Network Address Translation (NAT) has been an effective technique used to insulate a private internal IP network and map these to a single external IP address.

Detailed explanation-3: -Network address translation (NAT), a feature found in many firewalls, translates between external and internal IP addresses. With NAT, a private network can use internal, non-routable IP addresses that map to one or more external IP addresses.

Detailed explanation-4: -Network address translation (NAT) is a process that allows multiple devices on a local network to share a single IP address publicly, even when all devices have unique private IP addresses within that network.

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