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An elaborated article about firewall types:

There are a few different types of firewalls, each with its own set of benefits and drawbacks.

perimeter firewalls: The most common type of firewall, perimeter firewalls protect your computer from unauthorized access from the outside world. They typically use a series of rules to allow or deny traffic based on its source and destination.

application firewalls: Application firewalls protect your computer from unauthorized access to specific applications. They can be configured to allow or deny traffic based on its type, destination, or port number.

network firewalls: Network firewalls protect your computer from unauthorized access to the network. They use a variety of rules to allow or deny traffic based on its source and destination.

virtual private networks (VPNs): A virtual private network (VPN) creates a secure connection between your computer and a remote server. This allows you to access resources on the network that are not normally accessible.

A firewall is a device that protects your computer from unauthorized access. There are a few different types of firewalls, each with its own set of benefits and drawbacks.

Perimeter firewalls protect your computer from unauthorized access from the outside world.

Application firewalls protect your computer from unauthorized access to specific applications.

Network firewalls protect your computer from unauthorized access to the network.

Virtual private networks (VPNs) create a secure connection between your computer and a remote server.