Understanding What a Firewall Is
A firewall is a security system that controls what information enters or leaves a device or network. It acts like a digital gatekeeper, blocking unwanted traffic and allowing safe connections.
How a Firewall Protects You
When data tries to reach your device, the firewall checks where it comes from and what it contains. If it looks suspicious or unsafe, the firewall blocks it before it can cause harm.
Types of Firewalls
Firewalls can be built into your computer, installed as software, or run on a router or network. They all share the same goal: stopping harmful data from getting in.
Why Firewalls Matter
Firewalls help prevent hacking attempts, unauthorized access, and malware infections. They protect your personal information and keep your devices safer while you browse or work online.
The Simple Takeaway
A firewall is a basic but essential defense tool. It filters digital traffic, blocks threats, and helps keep your online experience secure and controlled.