What is a Firewall? Definition, Network Security and Working Process

A Firewall is a safety device – hardware or software – that can help protect your network by filtering traffic and preventing third parties from gaining unauthorized access to reserved data on your processor.

Not only does firewall block unsolicited traffic, but it can also help prevent malware from infecting your computer.

Firewalls can offer different levels of protection. The key is to determine the level of protection you need.

In this article, you’ll learn how firewalls work and determine the level of protection that will keep your processor and the data on it safe.

Firewalls are part of your Network Security

Firewalls are the first line of protection in-home network security.

Your home network is as secure as the least protected device. It is where a network security system comes in.

firewalls shouldn’t be your only consideration when securing your home network. It is essential to ensure that all Internet-connected devices, including mobile devices, have the latest operating system, web browsers, and security software.

Another consideration? Securing your wireless router. It could include changing your router’s name from the manufacturer-supplied default ID and password, rereading your security options, and setting up a visitor network for people to your home.

Also Read: What Is A Firewall? And How Does It Work?

What does a Firewall do?

A firewall acts as protection. It monitors attempts to access your operating system and blocks unwanted traffic or undetected causes.

A firewall acts as a wall or filter between your computer and another network, such as the Internet. You can consider the firewall as a traffic controller. It protects your network and information by managing your network traffic, blocking unwanted incoming network traffic, and verifying access by examining the network traffic for malicious content such as hackers and malware.

Your operating system and security software usually come with a pre-installed firewall. It’s a good idea to make sure these features turn on. Also, sort sure that your security settings configured to run updates automatically.

Also Read: How to Set-Up An Ad Hoc Wireless Network? – Features and Uses

How does a Firewall Work?

A firewall system analyzes network traffic based on rules. A firewall only accepts inbound connections that it has been configured to accept. It does this by authorizing or blocking specific data packets – communication units you send above digital networks – based on pre-established security rules.

A firewall functions as a traffic guard at the point of entry or port of your computer. Only essential sources, or IP addresses, are allowed. IP addresses are imperative because they classify a computer or origin, just as your mailing address identifies where you live.