What Is A Firewall? -

: Modern firewalls remember active connections. If a packet arrives claiming to be part of a conversation you never started, the firewall blocks it.

A is a security system that acts as a digital barrier between a trusted internal network (like your home or office Wi-Fi) and untrusted external networks (like the internet). Its primary job is to monitor, filter, and control incoming and outgoing traffic based on a predetermined set of security rules. Core Functions What is a Firewall?

Firewalls serve three main purposes to keep your digital environment safe: : Modern firewalls remember active connections

: Some firewalls act as a "middleman," hiding your device's actual IP address from the outside world and inspecting the contents of data more deeply. Common Types of Firewalls What is a Firewall?