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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filters web content requests like URL, domain, media, etc.
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is placed in front of web servers to hide, protect, offload and distribute access to web servers
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probes a computer for open ports
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None of the above
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Detailed explanation-1: -Proxy firewalls filter traffic at the application layer, which is Layer 7 of the Open Systems Interconnection model.
Detailed explanation-2: -The packet filtering firewall filters IP packets based on source and destination IP address, and source and destination port.
Detailed explanation-3: -The router acts as a screening device, and the firewall is the screen host. Screened subnet is another term for a demilitarized zone (DMZ).
Detailed explanation-4: -Proxy firewalls, also known as application-level firewalls, filter network traffic at the application layer of the OSI network model. As an intermediary between two systems, proxy firewalls monitor traffic at the application layer (protocols at this layer include HTTP and FTP).