Types of firewalls?

Here is a list of firewall types and their brief descriptions:

1. Proxy firewall: An early type of device, serves as the gateway from one network to another for a specific application.
2. Stateful inspection firewall: Now thought of as a “traditional”, allows or blocks traffic based on state, port and protocol.
3. Unified threat management (UTM) firewall: Typically combines the functions of a stateful inspection firewall with intrusion prevention and antivirus.
4. Next-generation firewall (NGFW): The evolution beyond simple packet filtering and stateful inspection. This blocks advanced malware and application-layer attacks.
5. Threat-focused NGFW: Includes all the capabilities of a traditional NGFW and also provides advanced threat detection and remediation.
6. Virtual firewall: Is typically deployed as a virtual applicance in a private or public cloud to monitor and secure traffic across physical and virtual networks.
7. Cloud Native firewall: With automated scaling features, enables networking operations and security operations teams to run at agile speeds.