Tag - What is Firewall

What is Firewall? Types of Firewall

A firewall is a hardware device or software application system designed to prevent unauthorized access to or from a private network. Firewall security system can be implemented in either hardware or software form, or a combination of both software & hardware. Firewalls system prevent unauthorized users from accessing private networks connected to the internet, especially intranets. All traffic entering or leaving the intranet must pass through the firewall security system, which filter each packets and data blocks those that...