Network Firewall Security: What it is and why you need it

Any business, large or small, is susceptible to cyberattacks, and cybercrimes are on the rise, impacting even the most protected organizations. When it comes to securing your network and keeping your business safe, there are several options, but one remains the cornerstone of network security — the firewall. Named after the literal wall used to stop the spread of fire, network firewall software and hardware serve as a barrier to separate trusted networks from untrusted networks.

Articles published September 16, 2019 by Ben Killion


What is a Firewall?

Firewall devices, which can be hardware, software or both, are network securities made to monitor the incoming and outgoing traffic of a network, they block and permit data based on specific security rules and act as a barrier against malicious traffic that can lead to an attack. Firewall devices have been the first line of defense for network security for more than 25 years with varying types of firewalls being created.

How a Firewall Works

Either a software program or hardware device, a firewall filters information coming through your internet connection into your private network or computer system. If the firewall flags incoming information based on security rules, that information is not allowed through to your network. For businesses with multiple computers and users all connected to the internet, the risk for cyberattacks grows.

Without a firewall in place to cover all computers and users, you’re directly accessible to anyone on the internet. With a firewall placed at the edge of your network each port, or internet access point, rules can be set regulating how your employees connect to websites, which types of files are allowed to leave the company and more. One firewall example is when a company uses a firewall to enforce a rule allowing only one computer to receive public FTP traffic within the building. All other computers would be blocked by the firewall, preventing unauthorized access.

Why you Need a Firewall

With the rise in data breaches across all industries, the Cybercrime and Internet of Threats 2019 Report anticipates that the direct and indirect annual costs of data breaches could reach $5 trillion by 2024. The internet has a lot of bad code and individuals traversing cyberspace looking for unprotected and under-protected computers and networks. No matter how well you train your employees, they are often a company’s biggest weakness in terms of network security. Maybe they inadvertently disabled a security measure or forgot one of your safeguards. A firewall serves as a next line of defense, blocking any accidental and careless mistakes, and keeps your network safe.

Your employees also serve in different capacities and some employees will require different access levels to different servers in your network. Some may even require different internet privileges, such as social media access. A network firewall is best suited to address the varying needs of your employees. Don’t take a chance on cyberattacks.

While the technology has been around the longest, there is still a clear need for firewalls in network security.

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About The Author

Ben Killion

Ben is an Client Advisor at Aureon, where he is a relationship builder, strategic customer advocate and results-oriented professional. He has been in the technology industry for nine years, focusing on leveraging technology to help clients meet their business goals.

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