What is a VPN? VPN Operation Protocols

Saturday, 16 November 2019 (3 years ago)

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What is a VPN ?

VPNS are the very common term in technological life, however not everyone understands the nature of the term. Even those who learn to specialize in information technology also feel very wobbly. So what is a VPN?

A VPN (Virtual Private Network) – A virtual private network, this is a service that enables users to safely and discreetly access the Web by routing users ‘ connections through a server and concealing their online actions.


Virtual private networks are the connection methods used to add security and privacy to private and public networks, such as WiFi and Internet access points. Virtual private networks are often used by corporations to protect sensitive data. However, the use of personal VPNS is becoming more and more popular when there are many previous interactions that are the direct transformation to the Internet. Privacy is increased with the virtual private network because the user’s original IP address is replaced by an address from a virtual private network (VPN) provider. Subscribers can obtain IP addresses from any port city that the VPN service provides. For example, you can live in Hanoi, but with a virtual private network you can live in Da Nang or any other city.

Why users need a VPN?

Hide IP address of the user: Connect to a Virtual Private Network (VPN) often hide the real IP address of the user.

Change the user’s IP address: Using a VPN almost certainly will lead to get a different IP address every time you visit.

Encrypted data transfer: Virtual Private Network (VPN) to protect the data you transmit via public WiFi.

Hide the user’s location: With a Virtual Private Network (VPN), users can select the country of origin for their Internet connection.

Access blocked sites: Get around the sites blocked by the government to the VPN.

Thus, security is the main reason why corporations were using VPNs for years. More and more simple method to block data transfers to the network. Firesheep is fake WiFi and two easy ways to hack information. A useful analogy is the firewall protects your data while on the computer and the VPN protects your data on the web. VPN protocols using advanced encryption and security techniques to encapsulate all the data online

Virtual Private Network (VPN) protocols

Setting up a virtual private network is a simple process. It’s as simple as entering the user name and server address. Smartphones can configure virtual private networks using the PPTP and L2TP/IPsec protocols. All major operating systems can configure PPTP VPN connections. The OpenVPN and L2TP/IPsec protocols require a small open source application (OpenVPN) and download the corresponding certificate.

Virtual Private Network (VPN) protocols

The number of protocols and available security features continues to evolve over time. The most popular protocols are:

PPTP (Point-To-Point Tunneling Protocol): Has appeared since Windows 95. PPTP’s main selling point is that it is set up simply on all operating systems. In short, PPTP has tunnel connecting point – Point over GRE protocol. Unfortunately, the security of the PPTP protocol has been questioned in recent years. It remained strong, but not the safest.

How does VPNS work?

When you connect your computer (or other device, such as a smartphone or tablet) to a VPN, the computer will act as if on the same local network as the VPN. All your network traffic is securely sent to the VPN. Because your computer works as it does on the network, this gives you secure access to your local network resources even if you’re in a different country. You will also be able to use the Internet as if you were at the site of the VPN, there are some benefits if you are using public WiFi or want to visit websites that are geo-blocked.

When connected to a VPN during the Web browser, the user’s computer will communicate with the Web status through a connection to the encrypted VPN. The relay VPN asks for you and forwarding the response from the site back through a secure connection.

Why you should use a VPN

The main reason why a VPN is more popular is security and privacy. Not only big companies and corporations in need that this day is used in the very popular personalization level.

Use of public Wifi regularly: using public networks is more dangerous stalking from viruses, malware to professional hackers who can easily steal media verification, bank password , photos, files… If you’re a frequent user to a public Wifi network, VPNS are the best companion.


You are the person who travels many places: if you are traveling abroad, a VPN can help you access services that may not be available in that country – assuming, China, where the government blocks websites like Facebook. At this time VPN key is the solution, it can change IP address and from there you can easily access and do what you like.

Protect your browser from a third party: even though you’re online right at your home, using a VPN is still a nice idea. For example, you might want to buy yourself an online gift without being harassed with related ads Over the next 6 months. If you are a Facebook user you will understand they evaluate user behaviour in this way, just you click on view online clothing is immediately your Newfeed will flood the same suggestion.

VPNS Encrypt your Internet traffic and replace your IP address, making it difficult to link it to you. It helps you not leave footprint on the web that can be tracked by ISPS and other third party snoopers.

Using File Sharing services: P2P (Peer-to-Peer) is one of the most effective methods for quickly sharing large data set on a network. But despite these completely legal uses, many Internet service providers (ISPS) often try to prevent Internet users from sharing P2P files. They do that by controlling access to file sharing sites or setting bandwidth limits that dramatically slows the Internet connection speed. A VPN causes an ISP repository to detect the process of sharing files and configuring the Internet connection. It encrypts the download, upload, and actual IP address to be unrecognized.

You need an identity mark: For people who are journalists, political, the identity in many cases will bring danger. In some countries, these people are entitled to freedom of speech, but there are actually many threats to the government in speech, so they need to cover up information. Using a VPN provides additional security for such sensitive messages and makes it the same as they are being received or sent from another location.

VPNS also offer many other benefits in securing safety and personalization for users. These are just the most common reasons for most people to list.

Although more and more Internet users (LAN) join the VPN trend, there are still many people who prefer to use the traditional way because they do not require confidentiality.

You are now ready to download for free. Here are some notes:

  • Please check our installation guide.
  • To check the CPU and GPU of Android device, please use CPU-Z app
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