What is firewall appliances?

Firewall appliances are dedicated hardware devices that provide network security by filtering incoming and outgoing network traffic based on pre-defined security rules. They are commonly used to protect internal networks from external threats like malware, unauthorized access, and denial-of-service attacks. They inspect network packets and either allow or block them based on configured policies, acting as a barrier between a trusted internal network and an untrusted external network (like the Internet).