Deciding on the best firewall for your specific requirements can be a difficult task, with many factors to consider, making it important to understand what a firewall is. A firewall can be hardware, software, or a combination of both and is designed to prevent unauthorized access to or from a private network. Firewalls can be deployed in a variety of ways, including:
- Network layer
- Application layer
- Stateful inspection
When choosing a firewall, it is important to consider the following factors: