If you’re reading this, I assume you’re looking for ways to encrypt your internet traffic and protect your personal data while online. If so, you’ve come to the right place! In this article, we’ll discuss what is VPN technology, how VPNs work, and the various types of VPNs available. Specifically, we’ll cover the following topics:
What Is VPN Technology?
Before we begin, let’s start by defining what VPN technology exactly is. A VPN (Virtual Private Network) is a software-based network that allows users to establish a private connection to a specific network or service. This means that all of the data that is transmitted through the VPN is encrypted so that only the intended recipient can read it. The use of VPNs is quickly becoming popular as more and more people become concerned about their personal data being intercepted while online. Even if you’re not planning on using a VPN for security reasons, it’s still a good idea to know more about how they work.
With most VPNs, you will be presented with a login screen that looks similar to the one below. You can either choose to create a new account or use the one you already have. If you already have a VPN account, then you can click on the “Log In” button to get started with your VPN connection. If you don’t have a VPN yet, then all you need to do is click on the “Create Account” button to get started with the registration process. Either way, after you’re logged in, you’ll be presented with a connection menu that allows you to select the VPN server location.
How Does VPN Technology Work?
Now that we’ve covered what VPNs are and how they work, it’s time to move on to discussing how they actually work. As we mentioned above, VPNs are used to establish a private connection to a specific network or service. This means that all of the data that is transmitted through the VPN is encrypted so that only the intended recipient can read it. For example, let’s say you wanted to connect to the Netflix US server so that you can watch the latest TV shows. Instead of going through the Netflix website individually, you would first establish a VPN connection, and then you would use the VPN client to connect to the Netflix server and watch TV shows as they were meant to be seen.
The next step will be for you to disconnect from the Netflix server and re-establish your VPN connection to another server (preferably the one in your area) so that you can continue watching the shows. This process is called tunneling, and it’s what allows you to seamlessly switch servers while connected to the VPN.
Types Of VPNs:
Now that you’re armed with an understanding of what VPNs are and how they work, it’s time to discuss the various types of VPNs available. As we mentioned above, there are two types of VPNs:
- Layer 2 Virtual Private Network (L2VPN)
- Layer 3 Virtual Private Network (L3VPN)
The first type of VPN is a Layer 2 Virtual Private Network (L2VPN). This type of VPN works at the Data Link layer of the OSI model. With L2VPNs, all of the data that is transmitted is encrypted, so that only the recipient can read it. However, since this type of VPN works at the data link layer, it has a limited use. Specifically, L2VPNs can be used to connect to a single server or group of servers, and they cannot be used to connect to a large number of servers.
The second type of VPN is a Layer 3 Virtual Private Network (L3VPN). This type of VPN works at the Network layer of the OSI model. With L3VPNs, the data that is transmitted is not only encrypted, but it is also encapsulated, which makes it even more secure. This type of VPN has a much wider use than L2VPNs because it can be used to connect to a much wider range of servers and services. In addition, this type of VPN has the ability to create what is known as a VPN tunnel. We’ll discuss this in more detail below.
Layer 2 VPN
We’ll now move on to discuss Layer 2 VPNs in more detail. A Layer 2 VPN is a connectionless network layer protocol that works at the Data Link layer of the OSI model. This means that a Layer 2 VPN does not require a priori knowledge of the network or route, and it can be used to connect to a single server or group of servers. In most cases, Layer 2 VPNs use the Internet Key Exchange (IKE) protocol to establish the connection. The advantage of using the IKE protocol is that it is very lightweight, and it is extremely easy to set up. In addition, Layer 2 VPNs operate at the Data Link layer, so they provide data encryption, and they also allow for the creation of tunnels.
Layer 3 VPN
We’ll now move on to discussing Layer 3 VPNs in more detail. A Layer 3 VPN is a connection-oriented network layer protocol that works at the Network layer of the OSI model. This type of VPN requires a priori knowledge of the routes (or paths) to the various destinations, and it can be used to connect to a large number of servers and services. The most popular Layer 3 VPN currently is OpenVPN. This type of VPN can create multiple virtual circuits (or tunnels) so that if one connection is being monitored, the other tunnels can continue operating. In addition to OpenVPN, Layer 3 VPNs use a protocol known as GRE to establish connections. The advantage of using GRE is that it is very streamlined and easy to set up. Specifically, if you’re using OpenVPN, you can use the client’s automated setup script to get your system connected to a nearby VPN server in a few easy steps. You don’t have to worry about configuring GRE manually due to its streamlined setup process.
What Are VPN Tunnels?
Tunnels are one of the two main components that make up a VPN. A VPN tunnel is a virtual connection (aka a tunnel) that is established over a physical connection such as the Internet. Once a tunnel is set up, all of the data that is transmitted over the physical connection is encapsulated (i.e. wrapped) so that it can be read by the recipient. The encapsulation process is what allows for the secure transfer of data over the physical connection. To establish a VPN tunnel, you’ll need to select a public IP address, create a username and password, and then click on the “Create VPN Tunnel” button. If you already have a VPN account, then you can click on the “Log In” button to get started with your VPN tunnel.
Remember that the purpose of this article is to introduce you to the world of VPNs and help you understand how they work. In general, it is a good idea to stay away from VPNs that are free since these type of VPNs can be easily compromised. This is why you should always use a reputable VPN that is either paid for or has a freemium plan.