What is Firewall?

[proxyhotdeals]

a part of a computer system or network that is designed to block unauthorized access while permitting outward communication.

[Dam Ponting]

It protects from an Unauthorized access.It is a product program or bit of equipment that helps screen out programmers, infections, and worms that endeavor to achieve your PC over the Internet.

[davidweb09]

Firewall help to protect your PC from viruses.

[manoharparakh]

A firewall is a software utility or hardware device that acts as a filter for data entering or leaving a network or computer. You could think of a firewall as a security guard that decides who enters or exits a building. A firewall works by blocking or restricting network ports. Firewalls are commonly used to help prevent unauthorized access to both company and home networks.

https://esds.co.in/security/vtmscan

[gautamsharma]

Firewall is network security device which prevent from unauthorized access.

[Pratiksha]

Firewalls carefully analyze incoming traffic based on pre-established rules and filter traffic coming from unsecured or suspicious sources to prevent attacks. Firewalls guard traffic at a computer’s entry point, called ports, which is where information is exchanged with external devices.

[Pratiksha]

A firewall is a network security system, both hardware- or software-based, that manages the incoming and outgoing network traffic based on a set of rules.

[Pratiksha]

A personal firewall guards users against internet threats by performing security policies that restrict network communications in and out of a computer. A personal firewall is greatly important for computers with a static IP address or one with a stable IP address, such as with cable modems or DSL.

[Pratiksha]

In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules

[Freya009]

A firewall is a system designed to prevent unauthorized access to or from a private network. You can implement a firewall in either hardware or software form, or a combination of both. Firewalls prevent unauthorized Internet users from accessing private networks connected to the internet, especially intranets.