What Is Virtual Firewall And How It Help Us?

Last updated: April 6, 2024 Reading time: 6 minutes
Virtual Firewall And How It Help Us?

Our cybersecurity team is continuously working for the welfare of people by finding out and preventing hackers. These hackers hiding behind their black hoods are consistently trying to manipulate us with their devices to get our devices. So we must take a huge step to prevent ourselves from them.

Scientists and technicians are trying to invent the latest technology protection to create barriers between hackers and the systems. But the issue is that we still do not know how many ways a hacker can affect us. We know almost every move of the hacker, but again, they invent new ways to target us.

And till the time we find prevention to those, new ones come. So, as said, “precaution is better than cure.” Hence we must also be precautious before only. That means that we should build a security system in which hackers cannot cross the security in the first place only. Hence we would not need to find other preventions when they can’t even get into the system. So to secure ourselves, firewalls are invented and used. One of these is the Virtual firewall.

If this term is new to you, then don’t worry. This article will provide you with complete information about this service.

What is a virtual firewall?

A virtual firewall is a kind of firewall service or device that offers network traffic filtering and examining for virtual machines (VMs) in a virtualized environment.

A network firewall inspects packets for observing and supervising incoming and outgoing traffic based on encoded security policy rules. A virtual firewall has the same job. It delivers network traffic filtering and monitoring for virtual machines (VMs) in virtualized environments.

Virtual firewalls can be moved easily from cloud to cloud. This is the reason they were preferred a lot. Due to the system’s flexibility, a virtual firewall may be better to use in smaller organizations that labor outside a company network. A virtual firewall is also simple to update and sustain.

A virtual firewall is a system or a network firewall device that offers packet filtering in a virtualized environment. A virtual firewall is responsible for managing and controlling all kinds of traffic. It works with switches and has almost the same functions as a hardware firewall; how Can It Help Us?

A virtual firewall works in a bridge mode and a hypervisor mode. Like any ideal firewall system, a bridge mode is responsible for diagnosing and observing all the virtual machine’s incoming and outgoing traffics.

In hypervisor mode, the virtual firewall controls inaccessibility from the physical network, existing in the center of the hypervisor and handling both sides traffic of the virtual machine.

How can it help us?

As mentioned before, virtual firewalls are very helpful, especially regarding security. It is beneficial for the system’s protection and has many benefits. Some of these benefits are given as follows:

  • Keeps unapproved users from getting to records
  • Prevents exchanging of sensitive info by employees
  • Inexpensive
  • Does not require IT support
  • Protects an organization’s cloud infrastructure

1. Keeps unapproved users from getting to records:

An essential job of a virtual firewall is to save and protect the system from an unknown user getting to our records. This firewall keeps any unapproved user from getting to and harming the system. So if any user who may not seem safe is unapproved, a virtual firewall saves the system from these users.

Hackers may try to get into the system by using an authentic user’s name, so a virtual firewall keeps the hacker away from the system and prevents it by not letting the hacker get through the system, thus saving it.

2. Prevents exchanging of sensitive info by employees

Another significant advantage of virtual firewalls is that they do not let the company employees share any confidential information relating to the company. This means that it saves them from insider mistakes and traitors. Hence no one working in the system can exchange data without supervision.

Sometimes the hacker might fool a staff member and ask him to exchange the company’s sensitive data. Or maybe not force him but offers him something in return, which means the staff member can become a traitor. In such cases, a virtual firewall protects the security of the system.

3. Inexpensive:

The most apparent advantage of a virtual firewall is its low-priced service. This is the most prominent reason for using a virtual firewall over any other one. This is the reason why people prefer virtual firewalls and not hardware firewalls.

Virtual firewalls are purchased more than any other because they are inexpensive and cheap. Virtual firewalls are affordable and do not cost more than a hardware firewall. Hence this is the main reason for the popularity of a virtual firewall.

4. Does not require IT support:

Another plus point of using a virtual firewall is that it does not require any specific IT technician to solve and use the problems. It means that anyone can easily use it, and the issues are also addressed by anyone using it. So you do not need IT support until required (like in emergencies).

In any hardware firewall, you would need an IT professional to help you out with the regular proceedings of the firewall. Still, in a virtual firewall, you can do the underlying operations independently and would not need help until a major hack happens.

5. Protects an organization’s cloud infrastructure:

As mentioned, virtual firewalls are a great way to secure and protect. They can protect in several ways. One of the protection they provide is the protection of any company’s cloud infrastructure. This is also very helpful to organizations in many ways.

Cloud infrastructure includes the hardware and software mechanisms — such as servers, storage, a network, and virtualization software required to maintain the computing necessities of a cloud computing model. By protecting the cloud infrastructure, virtual firewalls preserve an organization’s hardware and software mechanisms.

Virtual Firewalls Vs. Physical Firewalls; Which is better

Physical firewalls are used in a security appliance or as a measure of a routing device and labor externally of an operating system, using servers and switches. They help tie the public internet to the internal network, which they protect, over dedicated network edges. No traffic can bypass the physical firewalls since they exist between the open web and the server.

 Any information alteration between the internal network and server must occur through the network interfaces and, therefore, through the physical firewall. Physical firewalls are hardware devices and thus can handle heavy traffic and do this in a short period.

You are a remote network constituent that does not impact the routine of other applications. A physical firewall is somewhat easier to arrange. Suppose you want to alter, reposition, or rearrange the hardware firewalls or even shut them. In that case, you can do it easily without the tension that will impact the performance of networks and any other connection.

 Hardware firewalls often must be installed, managed, and supported by an IT person or the network funding staff.

As discussed above, virtual firewall software appliances used within virtualized environments work with virtual switches and machinery to observe, manage, and clean the traffic. A hypervisor arranges the virtualized environment, devices, systems, and appliances and links them by virtual switches.

 Virtual firewalls are comparatively cheaper than physical firewalls, as mentioned before. Even though organizing a virtual firewall on its server is convenient, too many can cause problems. Virtual firewalls can be centrally controlled and arranged.


With the evolution of humanity, technologies are also evolved, and we must understand the importance of such techniques invented for our benefit and use them; just like virtual firewalls developed to help and protect our systems, we should use them for our benefit.

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About the Author

Rebecca James is an IT consultant with forward thinking approach toward developing IT infrastructures of SMEs. She writes to engage with individuals and raise awareness of digital security, privacy, and better IT infrastructure.

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