NETWORK SECURITY
FIREWALLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Operates at the Session layer.
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Operates at the Network and Transport layers.
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Operates at the Application layer.
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Verifies sequencing of session packets.
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Examines the entire message contents.
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Detailed explanation-1: -Firewalls are filters network traffic which follows a set of rules and can either be used as hardware or software device. They are often categorized as network or host-based firewalls. Network firewall filter traffic between two or more networks while host networks run on host computers.
Detailed explanation-2: -Answer 1: Option B. Explanation: Packet filter firewalls can generate filter logs with very limited information.
Detailed explanation-3: -A proxy firewall is a network security system that protects network resources by filtering messages at the application layer. A proxy firewall is also be called an application firewall or gateway firewall. A proxy firewall is also a proxy server, but not all proxy servers are proxy firewalls.
Detailed explanation-4: -Proxy servers act as a firewall and web filter, provide shared network connections, and cache data to speed up common requests.