Which of the following firewalls examine traffic and filter on application-specific commands such as http:post or http:get?
DSSSB TGT - 2023,
Answer: A
Application gateways, also called proxy firewalls, examine traffic and filter on application-specific commands such as http:post or http:get, since they work at the application layer. Packet filters look only at the header information of the packets, circuit level gateways check the validity of the connection or session and not the commands inside it, and stateful multilayer inspection firewalls track the state of connections, so these three are not the ones filtering on application commands.
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