What Is Virtual Firewall And How It Help Us?

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

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

And till the time we find prevention to those, new ones come. So, as it is said, “precaution is better than cure.” Hence we must also be precautious from before only. That means that we should build a security system in which the hackers will not be able to cross the security in the first place only. Hence we would not need to find any 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. In this article, we will provide you 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 network 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. A virtual firewall may be better to use in smaller organizations that labor outside a company network due to the flexibility of the system. A virtual firewall is also simple to update and sustain.

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

A virtual firewall works in two modes, 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 in inaccessibility from the physical network, existing in the center of the hypervisor and handling both the sides traffic of the virtual machine.

How Can It Help Us?

As mentioned before also, virtual firewalls are very much useful, especially when it comes to security. It is very much useful, or the protection of the system and have many benefits. Some of these benefits are given as follows:

  • Keeps unapproved user 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 user from getting to records:

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

Hackers may try to get into the system by using an authentic user’s name, so 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 employees of a company share any confidential information relating to the company. This means that it saves them from insiders mistakes and traitors. Hence no one working in the system can exchange data without supervision.

Sometimes the hacker might fool a staff member and will ask him to exchange the company’s sensitive data to him. 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 can be said as the most prominent reason for using a virtual firewall than any other firewall. In fact, this is the reason why people prefer virtual firewalls and not hardware firewalls.

Virtual firewalls are inexpensive and do not cost any more than a hardware firewall. Virtual firewalls are purchased more than any other firewalls due to the reason of them being inexpensive and cheap. 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 necessitate any specific IT technician to solve the problems and use it. It means that anyone can easily use it and the issues are also addressed by anyone using it. So you do not need any IT support until required (like in emergency cases).

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

5. Protects an organization’s cloud infrastructure:

As mentioned before also, virtual firewalls are a great way to security and protection. They can protect in a number of 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 that are required to maintain the computing necessities of a cloud computing model. By protecting the cloud infrastructure, virtual firewalls protect the hardware and software mechanisms of an organization.

Virtual Firewalls Vs. Physical Firewalls; Which Is More 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 to tie the public internet to the internal network, which they protect, over dedicated network edges. Since they exist in between the open web and the server, no traffic can bypass the physical firewalls.

 Any information alteration that happens between the internal network and any server has to occur through the network interfaces and therefore through the physical firewall. Physical firewalls are hardware devices and thus can handle heavy traffic and also does this in a short period of time.

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

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

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

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


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

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