Which of the following firewalls are used to track the state of active connections and determine the network packets allowed to enter through the firewall? Each correct answer represents a complete solution. Choose all that apply.
Suggested Answer:DB🗳️
A dynamic packet-filtering firewall is a fourth generation firewall technology. It is also known as a stateful firewall. It tracks the state of active connections and determines which network packets are allowed to enter through the firewall. It records session information, such as IP addresses and port numbers to implement a more secure network. The dynamic packet-filtering firewall operates at Layer3, Layer4, and Layer5. Answer option A is incorrect. A circuit-level gateway is a type of firewall that works at the session layer of the OSI model between the application layer and the transport layer of the TCP/IP stack. They monitor TCP handshaking between packets to determine whether a requested session is legitimate. Information passed to a remote computer through a circuit level gateway appears to have originated from the gateway. This is useful for hiding information about protected networks. Circuit-level gateways are relatively inexpensive and have the advantage of hiding information about the private network they protect. Answer option C is incorrect. A proxy server firewall intercepts all messages entering and leaving the network. The proxy server effectively hides the true network addresses.
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