What Is A Firewall? (Choose the Best)

One of the major challenges that companies face when trying to secure their sensitive data is finding the right tools for the job.

Even for a common tool such as a firewall (sometimes called a network firewall), many businesses might not have a clear idea of how to find the right firewall (or firewalls) for their needs, how to configure those firewalls, or why such firewalls might be necessary.

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Hardware Firewall

Network Firewall

Introduction to firewalls

What Is A Firewall?

A firewall, or a secure zone, refers to the network elements on your network that enable your internet connection to pass through a given region or region and perform computations against another, related region.

To perform these computations, they need access to certain components of your network that your browser (or other application) does not have, namely databases.

If you are trying to protect your websites from DDoS attacks (distributed denial-of-service attacks), the “distributed” part of the “DDoS” moniker refers to the fact that the attack is “distributed,” meaning it occurs asynchronously (and randomly) across your network.

Typically, DDoS attacks will allow one IP address (or subnet) to flood another.

Types of firewalls

There are a number of different types of firewalls. They are most often divided into two categories: physical firewalls and virtual firewalls.

Physical firewalls involve physical devices, such as routers, that receive incoming network traffic and forward it to appropriate destinations. Examples of physical firewalls are the firewall on your computer and the router in your home router.

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Virtual firewalls are another category, in which a device is composed of software that interacts with the outside network via protocols (for example, IP). Architecture Each firewall is designed to protect a specific set of functions within a network, which gives the firewall a distinctive architectural design.

Architecture of firewalls

While many firewalls are static hardware devices installed on the network perimeter, others are “virtual” (meaning they run on the same hardware as the client devices, but as an appliance or even a piece of software installed on a data center’s server).

These kinds of firewalls are used to control the ports on which you want to allow or restrict traffic, but they also have other important roles to play, such as in-network hygiene and in preventing certain types of attacks.

Physical firewalls monitor the ports that are used to exchange data, such as HTTP, SSH, SMTP, FTP, TCP, and TCP/IP. Physical firewalls receive traffic that passes through them by relaying traffic through the firewall in order to pass data between client and server.

How to choose a firewall

There are a number of factors that you’ll need to consider when deciding on which firewall to purchase,

These factors should include both the technical details of the firewall you’re looking to purchase as well as the key concerns for your business, such as network location, data center type, workloads, compliance requirements, and even the number of endpoints that you have.

Here’s a brief run-down of some of the more common considerations, with information on how to find the right firewall for your organization: Technical specs.

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In general, the more details you have about a firewall’s technical specifications, the more likely you’ll be to make an informed decision on whether it’s right for your business.


These are just some of the considerations to think about when deciding on a next-generation firewall or firewall vendor.

And, to take another approach, when you are a new, up-and-coming business, do some research on the capabilities of your firewall vendor, their integration with other products (for example, e.g., security and threat prevention, identity and access management), and the teams who work at those vendor locations.

With so many players in the industry, you’ll want to make sure you are getting the best solution for your current needs. At the same time, you want to ensure that your vendor has the resources to bring out new products that can help you and your business meet today’s and tomorrow’s challenges.

About Charles Ingram

Hi, I am Charles your local Home Tech and Gadget Expert. I’ve been fascinated with electricity for as long as I can remember. I grew up in an old home in a rural setting, so the quality and continuity of our electrical service were spotty at best. Spending time without power (or running off a generator) gave me a lot of appreciation for the benefits of electricity. I love writing and talking about it.