How Does VPN Encryption Work? Let us start by explaining what VPN Encryption is and what it does to begin with. It is important to remember that a VPN is a Virtual Private Network, which allows you to ensure that the activities of your network are known only by you and the provider.

It works similar to the use of a home private network. Like a home network, the information and files you share through a VPN Encryption are kept secure and separate from the rest of the internet, just like a home network is.

There are several differences between a home network and a virtual private network, as the latter uses a local router to ensure that your information is secure and protected, whereas the former is managed virtually as the name implies.

A VPN is a type of virtual private network (VPN) that allows you to establish a secure connection with another network over the internet, concealing your IP address and encrypting your traffic, so you are safe from prying eyes such as your Internet Service Provider (ISP), the government, and other entities.

When a user subscribes to and connects their device to a VPN service, two significant events occur when they subscribe to and connect their device to a VPN service:

One, when they subscribe to and connect it to a VPN service from a VPN service provider. # How Does VPN Encryption Work?

  • It is important to note that all traffic between the device and the network is encrypted
  • An intermediary server, whose location is selected by the user, handles this encrypted traffic by passing it through an intermediary server

There is no way that anyone can follow your online activities if all your traffic is encrypted. If the data is encrypted, it will be impossible to track your online activity, and your data will be safe from being intercepted.

How Do VPNs Work?

Basically, now that we know that a VPN is able to secure your information, we can now compare that to the security provided by a home router. The only difference between them is that a local network shared over a common router is not dependent on the Internet to function.

Despite the fact that VPN Encryption takes place exclusively over the Internet, there are inherent risks associated with this that must be addressed through additional security protocols.

When you are going to set up a VPN, you will have to install software that allows your machine to communicate with each other while at the same time ensuring that the VPN is encrypted as you use it.

The provider is usually controlled through a Remote Access Server, or RAS, and allows the transmitted information to be verified through various types of protocols, as well as through a tunneling process, in order to ensure that the information is secure.

What are VPN Encryption Protocols?

As far as VPN encryption protocols are concerned, they are defined as the process used to create an encrypted secure path between two computers through a VPN.

There are differences in VPN encryption protocols between various VPN service providers that may impact security, speed, capabilities, and vulnerabilities. Below are some examples of VPN encryption protocols that are commonly used.

PPTP:

Point-to-Point Tunneling Protocol is one of the methods used for establishing a VPN over a dial-up connection. The key thing to keep in mind here is that this protocol does not have the same level of security as the other protocols about, as it is still easier to break.

OpenVPN: 

OpenVPN is an extremely secure VPN encryption protocol and it is considered the industry standard in use today. OpenVPN is an open-source technology and very configurable. In order to create a strong and reliable solution, it uses both the OpenSSL library and the transport layer security (TLS) protocols.

A VPN encryption protocol consists of both ciphers and hashs for encrypting data channels. Each cipher is secured by a hash, and the data channel is encrypted by the use of a cipher.

To secure the connection between your device and the VPN server, you need the control channel encryption, or TLS encryption, which consists of a cipher, hash authentication, and handshake encryption.

There are three different types of encryption algorithms: ciphers, secure hashes, and handshakes. The algorithm encrypts the data, the secure hash algorithm authenticates the data and SSL/TLS connection, and the handshake encryption secures the connection.

Adding another layer of security to TLS connections is the addition of Perfect Forward Secrecy or ephemeral encryption keys generated for each TLS connection and disposed of after each TLS connection by generating unique private keys.

OpenVPN has been described as a highly secure protocol operationally because of its strong encryption on both channels and its Perfect Forward Secrecy. # How Does VPN Encryption Work?

SSTP:

As a VPN protocol primarily used on Windows operating systems, Secure Socket Tunneling Protocol (SSTP) is a Microsoft-owned protocol that uses Secure Socket Tunneling Protocol (SSTP).

Although it offers most of the same features as OpenVPN, it is not an open-source program. Besides Linux, it can also be used with Macs, but it is less commonly used on Macs.

IKEv2:

As mentioned above, the Internet Key Exchange v2 protocol (IKEv2) is also associated with IPSec, and it has been widely used for mobile devices. Despite the fact that IKEv2/IPSec is capable of reestablishing a connection when the connection is temporarily lost or dropped, it is still a reliable and secure protocol for mobile devices.

L2TP:

A Layer 2 Tunneling Protocol (L2TP) connection can be created by combining it with IPsec to create a secure connection between your device and your VPN server using the IPSec protocol.

How Does VPN Encryption Work?
How Does VPN Encryption Work?

The internet protocol security protocol provides methods for encrypting the data portion of a packet as well as its header to ensure the privacy of the data inside the packet. In order for IPSec to work across the internet, a public key must be shared between the sending device and the receiving device.

A couple of things to keep in mind about this protocol are that firewalls are able to block its port easily, and it is not recommended to use pre-shared keys (PSKs) for encryption purposes.

There are other VPN protocols that are available, but WireGuard is a relatively new protocol which competes with OpenVPN in the speed and encryption department, and is starting to gain a lot of popularity.

What Are VPN Encryption Types?

For more information, please read our blog about data encryption for more information on the two types of encryption – private key based on symmetric algorithms and public key based on asymmetric algorithms.

Symmetric

This type of encryption algorithm encrypts plaintext and decrypts ciphertext using the same key. Both sender and receiver must be able to communicate with each other if they wish to communicate successfully.

The National Institute of Standards and Technology (NIST) has certified AES as a form of encryption algorithm or cipher. Examples of algorithms or ciphers of this type include Advanced Encryption Standard (AES) and Blowfish.

Asymmetric

In an asymmetric encryption algorithm, two keys are used: a public key and a private key. Asymmetric encryption is a type of encryption algorithm in which the public key and the private key are linked to each other in such a way that the public key encrypts the data while the private key decrypts it.

It is very common for the RSA encryption algorithm to work as a pair in relation to the other. # How Does VPN Encryption Work?

Conclusion

It is common for us to lock our valuables on a day-to-day basis in order to keep them safe. We lock our front door when we leave, we put a password on our cell phones, and we even double check that our cars are locked when we leave them.

It is by using a VPN that the average user is able to secure other aspects of their lives that are important to them, for example their personal data and virtual identity from those who would seek to harm them.

A VPN can be found in a variety of types, and ultimately the user is in charge of deciding which one best suits their individual needs.