What is VPN(Virtual Private Network)? What are the types of VPNs?
Friends, in today’s post, we will talk about What is VPN-Virtual Private Network? Friends, in today’s time everyone uses mobile and computers, so what are VPNs? All of us need to know what is the need for a VPN and how does VPN works. Friends, let us try to know what is VPN.
What is VPN -Virtual Private Network?
Virtual Private Network, or VPN, provides an encrypted connection from the device to the network over the Internet. The encrypted connection helps the user to ensure that his sensitive data is transmitted securely. It also protects unauthorized people from traffic eavesdropping and allows the user to work remotely. VPN technology is widely used in corporate environments.
Virtual Private Network This is a technology of Computer networks that provides Secure Connections between Public Networks and Private networks. For example, suppose there is a company and it has many different branch offices in the same city, if the connectivity of all the offices is done through the Internet, then the unauthorized person can access the data of the company. If the company wants to establish its own Wired Connection from one office to another office, then it is secure but it is very expensive and not reliable if there is any problem in the wire, then from the Particular Office Head Office and other of the company. Will be completely disconnected from Office
To avoid these problems, nowadays companies, education institutes, government organizations provide access to their servers to their branch offices or remote users using VPN technology. With this technology, the sensitive data of companies is safely transmitted through public networks.
Why do I need a VPN?
A VPN (Virtual Private Network) allows you to create a secure connection to another network on the Internet, Virtual Private Network uses some restricted zone or area. That’s why in today’s time people use VPNs to access their private network through public networks.
Hide your IP address-Connecting to a Virtual Private Network often conceals your real IP address.
Change your IP address using a VPN will almost certainly result in getting a different IP address.
Encrypt data transfers-A Virtual Private Network will protect the data you transfer over public WiFi.
Mask your location-With a Virtual Private Network, users can choose the country of origin for their Internet connection.
Access blocked websites-Get around websites blocked by governments with a VPN.
How Does a VPN Work?
A VPN extends a corporate network through an encrypted connection made over the Internet. Because the traffic between the device and the network is encrypted, the traffic remains private as it travels. An employee can also do his work from outside the office as he can securely connect to his corporate network via VPN. Even smartphones and tablets can connect through a VPN.
When you connect your computer (or any other device, such as a smartphone or tablet) to a VPN, the computer acts as if it were on a local area network. All your network traffic is routed over a secure connection to the VPN. Since your computer behaves as if it is on a network, it allows you to securely access your local network resources even when you are on the other side of the world.
When you browse the web while connected to a VPN, your computer communicates with the website via an encrypted VPN connection. The VPN processes the request for you and forwards the response from the website through a secure connection. If you are using a USA-based VPN to access Netflix, then Netflix is tracking your connection as coming from within the USA.
Virtual Private Network Protocols
PPTP – PPTP has been around since the days of Windows 95. The main point of PPTP is that it can be set up on every major OS. In short, PPTP is a Pint-to-Point connection over the GRE protocol. Unfortunately, the PPTP protocol is not the most secure.
L2TP/IPsec – L2TP over IPsec is more secure than PPTP and provides more features. L2TP/IPsec is a way of implementing two protocols together to get the best features of each. For example, the L2TP protocol is used to create a tunnel and IPsec provides a secure channel. These measures make for an impressively secure package.
OpenVPN -OpenVPN is an SSL-Based Virtual Private Network that is very popular nowadays. It is an Open Source software used and is freely available. SSL is a mature encryption protocol, and OpenVPN can run on a single UDP or TCP port, making it extremely flexible.
Types of VPNs(Virtual Private Networks)
VPNs are divided into 3 categories according to their role in business. These categories are being given below.
Remote Access VPN
Through Remote Access VPN, anyone can access the network of Employee or Worker Organizations anytime and from anywhere. These Employees Workers can use all the resources available in this network.
The network of any organization remains secure, no-host can be connected to any outside network in it. When a host connects through Remote Access VPN, the VPN represents it as if it is a local host.
Site to Site or Intranet VPN
Through Site to Site VPN, different offices of the organization establish a connection with each other through a public network such as the Internet. Site to Site VPN makes the resources of one office available to the hosts of another office.
When a 0rganization works together with another organization, then in such a situation it can use Extra-net VPN. With this type of VPN, an organization can provide limited access to its resources to another organization.