How Does a VPN Work?

Virtual Private Network (VPN), creates a safe channel for the users to access the geo-restricted content on the internet while maintaining privacy and security.

Short on Time? Here’s a Short Summary of How Does a VPN Work.

A VPN or a Virtual Private Network is used to create a secure connection path between a user and a VPN Server. It creates a private and reliable channel from which the user can easily access content that is unreachable to a specific geographical location, it can also be used to alter your IP Address.

A VPN can offer you,

  • Safe Web Browsing
  • Reliable Transfer of Data
  • Camouflaging the user from other sources by changing the IP Address.

How Does a VPN Work?

When you connect to a VPN, a secure bridge is formed between you and a VPN server. With this phenomenon, every operation that you perform goes through an encrypted tunnel. Making you invisible by changing your IP Address. The internet and the world wide web is running on data. Every data has its value according to the hunters of those data. To make sure that you are hundred percent safe on the web, you must know how does a VPN work.


When you are using VPN software, the data which you send out will have to cross several barriers before reaching its destination. When leaving from your end, the data is encrypted and it is sent to a location where the VPN Servers of that particular VPN Software are located, from which your original location is tweaked and then it reaches the destination which the user has intended to send.

How Does VPN Encryption Work?

When you enable your VPN and send data, that data is encrypted with an encryption method. With the encryption method being applied, it is sent to the server. Server decrypting the data forwards it to the internet. On the receiving end, when a user requests for data, it is once again encrypted before being received on the device. Encryption and Decryption contain processes of encoding and decoding data by different means.

VPN Encryption

Encryption can be done by developing a cipher with an intervention of a secret key from which the data can be encrypted. With the help of a key, it is made sure that only the people who are meant to access a file, should access it. The person with the key can decode the encrypted file only. It is done to prevent the data from falling into the wrong hands. There are different key mechanisms that VPN services use.

Secure Hash Algorithm (SHA)

SHA secures the data with Hash Function. It was first developed in 1993 namely SHA-0 with a 16-bit hashing technology. Later on, more enhanced versions were introduced like, SHA-1, SHA-2 with 256-bit and 512-bit technology, and SHA-3. It works by altering the data with a hash function which consists of bitwise operations. Hence, all of these encryption methods were introduced to keep sensitive data safe and non-exploitable.

Symmetric Key

Symmetric Key uses the same key for encryption and decryption. In this encryption technique, a secret key is shared between the two parties (Sender and Receiver). The sender encrypts the data with the key which turns it into a non-understandable form and sends it to the other party. On receiving, the other party is able to decrypt that data with the help of the same key to turn it into an understandable form.

Public Key

Public Key Encryption Method or Asymmetric Key uses two different keys. The data is encrypted using a public key and decrypted using a private key. The Private key is only owned by the people meant to see the content. The data which is encrypted by the public key can be only be decrypted by the private key. While the data which is encrypted by the private key can only be decrypted by the public key.

Handshake Encryption (Rivest-Shamir-Adleman)

The RSA algorithm builds the trust between two systems by a TLS Handshake. In this encryption technique, only the private key is hidden, while the public key can be known by everyone. The data is encrypted by using the public key but it can only be the person with the private key who has the authority to decrypt that information. Sometimes, there is limited time to decrypt the encrypted message for security reasons.

How Does a VPN Work with Different Protocols?

VPN Protocols

A VPN protocol is a source of instructions that decides exactly how your data is to be routed through a network. Every protocol has its own specification. For suppose, WireGuard VPN protocol ranks the speed higher to make sure the user does not have to face throughput speed issues. While L2TP VPN protocol focuses more on encrypting the data with a strong encryption method for privacy and security.

In order for a secure connection between a device and a VPN server, protocols play a vital role. The widely used protocols are,

IKEv2 (Internet Key Exchange Version 2)

It is a universal protocol that is one of the older protocols but still very reliable to use. IKEv2 is best when you need to connect to a server nearer to your location. It is a protocol that you can use on older devices. To use this protocol, get a value-for-money VPN service like ExpressVPN.


Not so popular for its speed but it is one of the most secure protocols to use. OpenVPN is best when you need to connect to a server that is far away from your location. Probably the best choice for the users who work on a desktop. Make sure to check out NordVPN, which is providing OpenVPN with TCP and UDP features.


It can be useful when the essential quality the user needs is speed, it works best on the activities of Video Calls, Gaming, Streaming.


It is used when the user wants no interruption in his/her activities like web browsing or file transfer.

PPTP (Point-to-Point Tunneling Protocol)

It is a VPN protocol that has cross-platform compatibility, has a fast connection, and is proved to be very cost-effective having an easy configuration method. PPTP has a 128-bit encryption method for the protection of data and thus, it can easily be breached because of having a low-security factor. With IPVanish, you can easily connect and use the PPTP protocol.

L2TP (Layer 2 Tunneling Protocol)

L2TP has a 256 encryption method. It is more secure than the PPTP protocol. L2TP is widely popular for its advanced security as it allows remote access to its users to connect to a network. It runs on a UDP protocol which is fast, being firewall-friendly in nature. Surfshark has the highest rating L2TP protocol in the VPN market, make sure you know how Surfshark VPN works to know more about its rich-in-number protocols!


It is a protocol in which you can have the stealth mode on by working under the radar. This protocol makes your ISP unable to track you and thus makes the user invisible. It is useful when a user is trying to access something while being connected to a restrictive network (Educational Institute or Hotel). To make sure you don’t get noticed while browsing, go for TunnelBearVPN.


One of the latest protocols designed for its high speed and ability to work efficiently when the user has to switch a lot between WiFi network and Mobile data. To check out this protocol, visit CyberGhost.

How Does a VPN work with different kinds?

Ever wondered how does a VPN work with different kinds of mechanisms? VPNs can be divided into two main categories, Remote Access and Site-to-Site. Each kind has its own benefits. Remote Access is more for individuals to remotely carry out their operations with ease. While Site-to-Site is for large businesses to make sure they are always securely connected. Explaining more on how these VPN kinds work,

Remote Access VPN

VPN Kind 1

A VPN type in which a user can access and use a VPN server remotely by creating a secure tunnel between the user and VPN server in such a way that Eavesdroppers or Government Bodies can’t track the user business, keeping the factors of security and privacy alive for user data.

Site-to-Site VPN

VPN Kind 2

It connects one site (on one location) to another site (on another location), it is also called Intranet Based VPN. This type of VPN is used by corporate offices of large magnitude, usually having offices located in different parts of the world by creating a Virtual Bridge and connecting one site to another site.

How Does a VPN Work on my computer? 

There are various ways you can install VPN software on your computer, but it is essential to know how does a VPN work with different implementation methods,

How Does a VPN Work Using a Router?

In the scenario of multiple devices using the same connectivity, the VPN can be directly installed on the Router to make sure all the devices which are using that same internet connection can perform all the miscellaneous operations with a secure and private channel.

How Does a VPN Work on Browsers?

When browsing the internet, users having the need for secure browsing can use Standalone VPN Softwares for the reliability and security of their data. Some browsers need third-party VPN Softwares but there are also browsers like Opera having their own VPN Extensions to serve the user intent and ergonomics.

How Does a VPN Work on Company servers?

Companies use custom VPNs to defeat the factor of leaking out the company data by any means. It is managed by the IT Team of the company to make sure the trading of the company information is not at risk. As described earlier, in this scenario, a Site-to-Site VPN would be used.

How can I make a VPN work on my smartphone?

Installing a VPN on your smartphone is not that difficult considering all the android and iOS devices are having user-friendly interfaces. You can easily download and install a VPN app from the app store. For an average smartphone user, it is just a switch that makes it enabled for the user to use a VPN. However, manual instructions can also be followed for a greater degree of privacy and security. Some VPN apps also offer the users to choose between different protocols and use them accordingly.

How does a built-in Windows 10 VPN work?

Windows 10 offers its own VPN service to the users for their personal or professional use. You can create your own VPN in Windows or any other device (Mac, Android, or iOS) easily. To have secure browsing on your Windows, follow these steps to use the built-in VPN,

Creating a VPN Profile

VPN in Windows 10 1

  • Go to your Windows Settings and select Network and Internet, select VPN and add your VPN connection.
  • Add Windows as your VPN provider.
  • You need to type a name in the Connection Box in order for you to select that name when connecting to your VPN connection.
  • Type the address in the Server Address of the VPN server.
  • You need to choose a VPN Type for a connection you need to create.
  • You need to choose a type of sign-in information in Type of Sign-in info for different types of credentials you can use i.e. Username and Password, One-Time Password, Certificate, or Smart Card when connecting to the Windows VPN.
  • Save the settings.


Connecting to VPN

VPN in Windows 10 2

  • Click the Network icon present in the taskbar.
  • Select the VPN connection which you have set up and connect to it.
  • If required, enter the credentials which you have set up for the VPN.


7 Reasons to choose a secure VPN Provider

There are various reasons for a user to choose a VPN provider wisely because he/she is trusting that VPN provider with private data so it is better to only choose a VPN provider after digging a lot to make a firm decision. Some factors of choosing a secure VPN provider may be,

1. Safety and Privacy

Safety and Privacy

The main objective of any VPN is to make sure that the user’s data is encrypted properly and no other party (Eavesdroppers or Hackers) would have access to the user data. Check if your VPN is working every time before browsing to make sure that your data is private and you browse with absolute anonymity.


2. Anonymity


The VPN provider should be authentic enough to serve the users with the promised anonymity service from the bodies lying outside of the secure channel which the VPN has created for its user.


3. Reliability


A trustworthy VPN provider would serve its user by making sure that the reliability of the data is not compromised, the data shared by the user may remain private and may not get leaked in case of any breach in the company’s systems.


4. Utilizing Subscriptions

Utilizing on Subscriptions

VPN can be used by the people of regions where subscriptions like Netflix offer a little set of movie libraries by paying the same amount which the people in other regions are paying. Change location with a VPN and access those content too which are restricted to your region.


5. Get Rid of Hackers

Get Rid of Hackers

By connecting to a VPN, you eliminate the chances for the hackers to make you prey as it would be useless for them to track your traffic. It is useful to have VPN software when a user connects to a public WiFi of an Airport or an institute, hackers might find this opportunity useful and attack.


6. Outsmart Pricing Discrimination

Outsmart Pricing Discrimination

While shopping online, it is possible that the store might charge every different individual according to their geographical location, if you are using a VPN, you can outsmart the online shopping world by faking your location and make the most of it.


7. Speed


Some VPNs, while connected, may slow down the performance of the user activities. It is important to choose a reliable VPN provider for smooth operations of activities.


Frequently Asked Questions – FAQs


The use of VPNs is legal all around the world, except for some limited regions. Regardless, all types of cybercrimes are illegal, whether they are carried out by a VPN or not.

There is no exact answer to how much a VPN would cost an individual. Various VPN providers have different pricing plans. But it can range from $2 to $7.

A VPN can provide a private and secure channel to a user. Every operation of the user is securely carried out, maintaining the reliability, security, and privacy of the data.

VPN can be a great source of anonymous browsing but unlike everything else, it has its limitations. If someone has an intention to bypass it, it is possible by malware attacks.

Netflix can be watched through a VPN very easily. Having just to download and install a VPN app that works on Netflix. You may easily have access to geo-restricted content while sitting in that region.

To torrent with a VPN is possible since VPNs hide the IP Addresses of a user. But it is risky if your VPN gets disabled without warning, you might get caught.


The query, how does a VPN works can have different dimensions. It depends upon the protocols, types, and encryption techniques of various VPNs. Different VPNs have different qualities of their own but their sole purpose is the same. VPNs are used for secure browsing, private sessions, and reliable shopping channels. The channel which a VPN creates is so secure that it is not possible for any eavesdropper or hacker to gain access to it, as the IP Address of the user is not the actual address, it’s a location faked by the user with the means of a VPN server.