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VPN (Virtual Private Network)

A virtual private network (VPN) is a computer network that provides a secure connection over a public network such as the Internet. VPNs are most often used by corporations and organizations to protect sensitive data, to provide remote access to employees or guests, or to enable users to appear as if they are located in a different country.

A VPN, or Virtual Private Network, is a secure and private way to connect to the internet. It allows you to change your IP address and location. Read more in detail here: best vpn.

VPN (Virtual Private Network) technology aids in the establishment of a secure Internet connection. This article will cover Virtual Private Networks (VPNs), how they operate, and the best VPNs for 2021. Why do we need it? Are VPNs free and legal, and what are the benefits and drawbacks?

VPN stands for Virtual Private Network (Virtual Private Network)

A virtual private network (VPN) is a private network that protects a user’s online privacy while using a public network, such as the Internet. VPNs encrypt your connection and protect your data by disguising your IP (Internet Protocol) addresses.


Figure 1 shows an overview of virtual private networks (VPNs).

The user’s internet actions are practically untraceable while using a VPN. Any intruder will be unable to determine your location, device, IP address, or browsing history. For instance, if you are in America, a VPN may disguise your data as coming from Africa.

VPNs allow traffic to be routed via another network, allowing users to safely access apps, websites, and entertainment. A virtual private network (VPN) protects you against dangerous websites and advertisements. It also allows you to use a single account to connect to numerous devices.


Figure 2: Characteristics of a Virtual Private Network

2021’s Top Virtual Private Networks

The following are the Best Virtual Private Networks for 2021:

  • ExpressVPN
  • CyberGhost
  • Surfshark
  • IpVanish
  • VPN service that is private
  • NordVPN


This service is offered by a business based in the British Virgin Islands. It features an easy-to-use interface and is available for free download. It works with virtually every version of Windows, including Windows Vista, Windows 7, Windows 8, and Windows 10.

ExpressVPN may be found here.


CyberGhost’s servers vary in size from 6500 to 7000. You’ll be able to access Netflix, Torrent, and other geo-restricted material with CyberGhost.

CyberGhost (link)


This is a simple VPN with a Whitelister function that allows the user to specify which apps or websites should not be sent via the VPN connection. This is a very useful feature for financial apps and websites.

Surfshark is a website that allows you to surf the web.


It protects Windows, Linux, Android, Mac, Chromebooks, Ubuntu PCs, and more platforms. IpVanish offers anonymous torrenting and access to geo-restricted material, just like any other Virtual Private Network.

IpVanish is a website that allows you to hide your IP address.


PrivateVPN additionally offers high-speed multi-platform security. Currently, their service is available in 63 countries. They claim to use military-grade 2048-bit encryption, which they say protects you from governments and hackers.

Private VPN (link)


You may link up to 6 devices with one account. Multi-factor authentication is one of the advantages it offers. They have 5282 servers in 59 different countries.

NordVPN may be found here.


Figure 3: The Most Effective Virtual Private Networks

How Does a Virtual Private Network Work?

VPN, as previously said, is a private network that is offered over a public network. Internet, ATM, Frame Relay, and Public Voice Networks are examples of public networks (PSTNs). Virtual Private Networks (VPNs) utilize Tunneling technology to enable distant users to connect securely. A VPN service will have a large number of servers located all over the globe. The VPN company’s software is installed on servers, which are machines that operate the VPN company’s software.

The user subscribes to his or her chosen VPN provider and downloads/installs the program with the appropriate security settings, establishing a secure connection with the specified server. VPN software on the user’s PC encrypts data and transmits it via a secure connection through the ISP to the VPN server.


Figure 4 shows the VPN’s working principle.

The data is decrypted and sent to the intended destination on the Internet via the VPN server. Data is received from the Internet by the Virtual Private Network Server, which is then encrypted and delivered to the User. The data is decrypted by the software on the User’s device, and the necessary information is obtained on his or her computer. It is secure because of the whole encryption/decryption cycle.

The majority of VPNs have a cost associated with them. There are a few services that pretend to be free yet charge you for things like your data, constant advertising, or even your privacy. As a result, it is fair to assume that VPNs are not yet free. You may, however, obtain free trials.

When it comes to legality, Virtual Private Networks are considered lawful in many nations. However, the usage of Virtual Private Networks is prohibited in ten nations. They are as follows:

  1. China
  2. Russia
  3. Belarus
  4. North Korea is a country in North Korea.
  5. Turkmenistan
  6. Uganda
  7. Iraq
  8. Turkey
  9. UAE
  10. Oman

1633373168_353_VPN-Virtual-Private-NetworkFigure 5: Virtual Private Networks (VPNs) Are Considered Illegal

Virtual Private Network Benefits

The benefits are as follows:

  • You will not get suggestions based on your search history if your browsing history is kept private.
  • It hides your IP address as well as your location.
  • It has a fast connection and limitless data.
  • Data security is provided via virtual private networks.
  • They also safeguard users against identity theft.

VPN’s Disadvantages

The following are some of the disadvantages:

  • In certain countries, using a virtual private network is deemed unlawful.
  • Some VPNs slow down your connection.
  • It’s not cheap.

Video about VPN from our Youtube Channel


Author’s Recommendation

Because not all Virtual Private Networks are made equal, select your VPN carefully based on your requirements.

Also see: What is ZIGBEE Technology in the Internet of Things – Architecture and Network Topologies Intent Based Networking – Working Principle, Advantages and Disadvantages Intent Based Networking – Working Principle, Advantages and Disadvantages DAK Net: What it Is, How It Works, Architecture, Applications, and Benefits

A VPN is a virtual private network that creates an encrypted connection between your computer and the internet. There are many different types of VPNs, including ones that function as proxies, web browsers, or encrypt data while it’s in transit. Reference: types of vpn.

Frequently Asked Questions

What is virtual private network VPN and how does it work?

A virtual private network (VPN) is a technology that creates an encrypted connection over the internet between two computers or devices. This allows users to send and receive data across shared or public networks as if they were directly connected to each other, when in reality, they are on different networks.

Does VPN mean virtual private network?

VPN stands for Virtual Private Network. It is a type of network that provides privacy and security over the internet by encrypting your online traffic and routing it through an intermediary server, which can be located anywhere in the world.

Is VPN safe for private browsing?

VPNs are safe for private browsing.

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