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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On which layer of the OSI does a circuit proxy filter firewall operate?
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Session
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Network
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Data Link
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Transport
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Explanation:
Detailed explanation-1: -Proxy firewalls filter traffic at the application layer, which is Layer 7 of the Open Systems Interconnection model.
Detailed explanation-2: -Packet-filtering firewalls operate at the network layer (Layer 3) of the OSI model. Packet-filtering firewalls make processing decisions based on network addresses, ports, or protocols.
Detailed explanation-3: -Web application firewalls (WAFs) – A WAF is one that monitors the traffic that enters or leaves your network via HTTP and HTTPS connections. As such, this type of firewall operates on OSI layer 7.
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