Firewalls

A firewall can be hardware, software, software-as-a-service (SaaS), public cloud, or private cloud (virtual). Its primary purpose is to create a barrier between trusted internal networks and untrusted external networks, such as the internet, to prevent unauthorized access and protect sensitive data.

There are different types of firewall

• Proxy firewall  

•  Stateful inspection firewall  

•  Unified threat management (UTM) firewall  

•  Next-generation firewall (NGFW)  

•  Threat-focused NGFW  

•  Virtual firewall  

•  Cloud Native Firewall