NETWORK SECURITY
FIREWALLS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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packet
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stateful
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application
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proxy
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Detailed explanation-1: -A packet filtering firewall allows and blocks network traffic by examining information in the IP packet header such as source and destination addresses, ports, and service protocols. A packet filtering firewall:-Uses ACLs or filter rules to control traffic.-Operates at OSI Layer 3 (Network layer).
Detailed explanation-2: -Stateful firewalls are capable of monitoring and detecting states of all traffic on a network to track and defend based on traffic patterns and flows. Stateless firewalls, however, only focus on individual packets, using preset rules to filter traffic.
Detailed explanation-3: -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.