![]() When implementing a circuit-level gateway firewall, whether individually or in tandem with other network security and firewall solutions, there is a set of features you can expect upon deployment. In the case of malicious activity detected in an incoming data packer, the firewall terminates the connection and closes the circuit connection between the nodes.įor more information, also see: What is Firewall as a Service? Features of Circuit-Level Gateways They’re best combined with a stateful inspection firewall for securing layers 3 and 4, and an application-level firewall to secure Layer 7.Ĭircuit-level gateway firewalls are able to maintain a network’s security by constantly validating and authenticating the connection by only allowing safe data packets to pass. This type of firewall is rarely used individually as a stand-alone solution for network security. They authenticate the handshake by scanning and examining the IP addresses of the packets as the 5th layers, and stand between the incoming web traffic and the sending hosts. ![]() It’s the layer responsible for providing the mechanism of initiating, managing, and closing a communication session between end-user application processes.Ĭontinue reading to learn more about the features, pros and cons, and functionality of a circuit-level gateway.įor more information, also see: Why Firewalls are Important for Network Security How Circuit-Level Gateways WorkĬircuit-level gateway firewalls work by providing a layer of security between TCP and UDP throughout the connection by acting as the handshaking agent. ![]() ![]() A circuit-level gateway is a type of firewall that operates on layer 5 of the Open Systems Interconnection (OSI) model, which is the session layer. ![]()
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