TELECOMMUNICATIONS SYSTEMS
NETWORK ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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packet filtering
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stateful packet inspection
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NAT filtering
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Application-level gateway
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Detailed explanation-1: -The packet filtering firewall filters IP packets based on source and destination IP address, and source and destination port.
Detailed explanation-2: -IP filtering and network address translation (NAT) act like a firewall to protect your internal network from intruders. IP filtering lets you control what IP traffic will be allowed into and out of your network. Basically, it protects your network by filtering packets according to the rules that you define.
Detailed explanation-3: -Stateful Inspection Firewalls A stateful inspection firewall (or dynamic packet-filtering firewall) monitors incoming and outgoing packets at the network and transport layers. This firewall type combines packet inspection and TCP handshake verification.
Detailed explanation-4: -A packet filtering firewall is a network security feature that controls the flow of incoming and outgoing network data. The firewall examines each packet, which comprises user data and control information, and tests them according to a set of pre-established rules.