COMPUTER THREATS SECURITY
WHAT IS A FIREWALL IN NETWORK SECURITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Trunk
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VPN
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Bastion
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Dual-homed gateway
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Detailed explanation-1: -A screened subnet, or triple-homed firewall, refers to a network architecture where a single firewall is used with three network interfaces. It provides additional protection from outside cyber attacks by adding a perimeter network to isolate or separate the internal network from the public-facing internet.
Detailed explanation-2: -EXPLANATION A dual-homed gateway is a firewall device that typically has three network interfaces: one connected to the internet, one connected to the public subnet, and one connected to the private network.
Detailed explanation-3: -The first firewall (also called the “front-end” firewall) must be configured to allow traffic destined for the DMZ only. The second firewall (also called “back-end” firewall) allows only traffic from the DMZ to the internal network. Dual firewalls provide a more secure infrastructure.