They will communicate and share intel between devices and the network. Network firewalls are often situated at the very front of a network, essentially acting as a gatekeeper to block unwanted traffic. Network firewalls will provide stateful inspection into all network traffic – they can allow and block traffic based on ports, protocols, filters, and state, depending on predefined policies. What Is A Network Firewall?Ī network firewall is a cybersecurity tool that sits in your network security stack to examine and filter network traffic, blocking or restricting any unauthorized access to the network.

We’ll indicate who they are best suited to, and the type of organizations that should implement one. In this article, we’ll explain what the different types of firewall are, and how they differ.

Each offering slightly different capabilities and functioning in a different way. In theory, a firewall is quite a simple tool, but there are a whole range of different firewall types to choose from. It is designed to filter out all unwanted and malicious traffic, while allowing “good” traffic unimpeded access. A network firewall is a security tool that monitors and examines all incoming and outgoing traffic to a network or device.