What is a Firewall?

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What is a Firewall?

A firewall is a network security device that monitors and inspects incoming and outgoing network traffic and allows or blocks data packets based on a set of security rules you have placed on your device. Its function and purpose is to establish a barrier between your internal network and the internet in order to block malicious traffic like viruses and or even hackers.
Firewall Modem Router Cyber-Security

How do firewalls work?

Firewalls can be either software or hardware devices and it’s your first layer of cyber security which work as a filtration system for the data that’s trying to enter your computer or network. Firewalls scan network packets for malicious code or attacks that have already been identified as established threats. Should the data packet be flagged and determined to be a security risk, the firewall stops it from entering the network and reaching your computer. There are several different ways security firewalls can monitor and regulate network traffic.

The firewall places protective filters in and around your network and devices. They can help in preventing a number of different security risks which include, viruses, hackers, spam, remote logins and many more.
As there are both hardware and software firewalls, there are different methods of how you get protected. With a hardware firewall option it is often built into the router to stop traffic coming from your broadband internet through to your router and networked devices. As for the software option, there is one running within Windows, which is built in that you can access and make changes in the Control Panel for threats to stop accessing your computer locally.
If you’re needing advice on how to protect your home office or small business network from any intrusions or anyone accessing your network, speak to Geekknowtech.

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