GATE Computer Science (CS) 2011 Solved Paper

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Question : 12 of 65

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A layer-4 firewall (a device that can look at all protocol headers up to the transport layer) CANNOT

block entire HTTP traffic during 9:00 PM and 5:00 AM
block all ICMP traffic
stop incoming traffic from a specific IP address but allow outgoing traffic to the same IP address
block TCP traffic from a specific user on a multi-user system during 9:00 PM and 5:00 AM

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