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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Transport Layer
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Host-Based
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Network Layer
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Reverse Proxy Server
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Detailed explanation-1: -The correct answer is option 4. Network layer Firewall can filter on Source And Destination IP address, Source and Destination Port no for both TCP and UDP packet.
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: -Application layer firewalls can filter traffic at the network, transport, and application layer. Filtering at the application layer also introduces new services, such as proxies. Application proxies are simply intermediaries for network connections.
Detailed explanation-4: -Proxy firewalls, also known as application-level firewalls, filter network traffic at the application layer of the OSI network model.
Detailed explanation-5: -Packet filters, proxy filters, and stateful packet filters are some of the technologies used to accomplish this protection. Each one works in a different way to filter and control traffic.