A firewall is simply a program or hardware device that filters the information coming through the Internet connection into your private network or computer system.If an incoming packet of information is flagged by the filters, it is not allowed through.

Jun 24, 2010 What is a Firewall? - YouTube Jun 16, 2019 Firewall dictionary definition | firewall defined firewall definition: The definition of a firewall is a security gate for your computer. When it is installed, it analyzes incoming data and allows certain information to pass through if that information is safe and trusted. If information is not trusted What is a Firewall? - Definition from Techopedia May 15, 2017

Firewalla is an all-in-one, simple, and intelligent firewall that connects to your router and protects your devices from cyber attacks. It’s an advanced solution to safeguard your personal data, monitor and control your kids’ internet usage, block ads, and continue protecting your information from threats when you’re using your device on the road.

Broadly speaking, a computer firewall is a software program that prevents unauthorized access to or from a private network. Firewallsare tools that can be used to enhance the security of computers connected to a network, such as LAN or the Internet. They are an integral part of a comprehensive security framework for your network.

A firewall is a network security system designed to prevent unauthorized access to or from a private network. Firewalls can be implemented as both hardware and software, or a combination of both.