In the modern world, using a VPN service is far from being a novelty. People know that VPN services are often used to bypass geo-blocking, access their favourite content abroad, and also for a high level of anonymity online. But how does a VPN work?
However, not many people know how a VPN works. How does this virtual private network, which everyone is talking about and which almost every modern Internet user has, actually work?
What is a VPN and how does it work
VPN is used to securely transfer data by millions of companies, organizations and people. This standard is considered to be “safe” and also completely legal.
VPN is short for Virtual Private Network
This means that two devices are connected via an encrypted VPN connection. In this case, one device is a “client”, that is, a device that connects to the “server” and initiates the connection. The registering device receives an internal IP address from the VPN server, which is only used for communication between the two devices.
What is a VPN connection and how does it work
How does a VPN work? A VPN connection differs from other connections, such as SSL or proxies, in which the login devices have neither authentication nor an internal network connection in the form of an assigned internal IP address.
VPN connections protect against monitoring and access to data by third parties. International secret services or even hackers have little interest in VPN-protected data because they cannot be viewed. However, without a VPN, secure data transmission on the Internet would not be possible, even for government agencies or other organizations.
Thus, VPN is the standard for secure data transfer between two or more devices.
Usually encryption algorithms from 128 to 256 bits are used, which guarantee 100% protection according to the current level of knowledge. However, there are many differences.
How does a VPN service work
Basically, you are browsing the Internet anonymously using an IP address from a VPN provider. When connected, the user is assigned the IP address of the VPN server. From now on, it will be used to communicate and when accessing websites, etc., instead of the ISP’s own IP address.
Note on IP addresses: an IP address is like a phone number, it is always unique and indicates the location and Internet provider. It is used as the sender address for all data transmission and, therefore, also allows inference as to where the Internet user came from.
Using the IP address of the VPN provider, it is no longer possible to conduct direct research on the Internet user. Thus, the user is “anonymous on the Internet” as hiding the IP address allows you to bypass firewalls and annoying content blocking by region.
How does a VPN work: VPN Protocols
Different types of transmission and encryption languages are used. These are called VPN protocols. Both VPN connection partners (client and server) must of course use the same protocol.
Typical and commonly used protocols are: OpenVPN, PPTP, L2TP / IPsec, Chameleon (VyprVPN) or IEKV2 (OSX, iOS).
The language provides communication, but various encryption methods are also used, such as AES, CBC, Blowfish and a few others. Typically, data is encrypted with a key length of 128 to 256 bits. Higher speeds will cause huge resource consumption for all involved devices and therefore also lower the transfer speed.
How does a VPN router work
With a VPN router, you can secure all devices at home. Operation is very simple, inexpensive and offers many advantages.
A VPN router gives you the ability to browse the Internet securely and anonymously at home – on all devices connected to the Internet. Thus, a VPN router is a specially designed router that allows many end devices to be connected. you don’t need to install VPN software on each device separately. This way, your router, which monitors all your Internet traffic, is connected to the Internet through a VPN.
How does a VPN tunnel work
How does a VPN work? A VPN connection is actually called a “tunnel”. As I said at the beginning of this article, the tunnel is created based on your regular internet connection. A tunnel is a connection between your computer and a server computer. Both computers, in turn, are called nodes. Each of the nodes is responsible for how secure the connection is before they enter the tunnel.
How well does a VPN work
A VPN is a useful technology that does an excellent job with certain tasks. But the security of personal data still depends on the good faith of the VPN provider as well as your care. Some VPNs slow down the speed of your devices, others do not allow you to bypass geoblocking. Third parties even transfer your data to third parties (often these are free VPN services).