What is VPN?
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Simply put, the Virtual Private Network (VPN) enables users to connect to the Internet via an encrypted channel and provides secure data communications along with privacy.
How a VPN works?
The VPN provider directs the traffic coming from the user through its private server, so that all the traffic emerges from VPN server.
The VPN acts as a middle man while the user is connected to the internet and protects the user identity by hiding the ip address.
The data is encrypted and is passed through a private tunnel making the communications secure while data transmission. Since the data is encrypted, it cant be read by anyone.
![VPN](https://cyberrubik.com/wp-content/uploads/2020/08/vpn-4046047_1920-1024x649.jpg)
How companies use the VPN to enable secure Communications?
The users connect to the companies VPN network and establish a secure tunnel to communicate with the server in the office Network. The offices at various places can communicate through a safe channel privately in the public network.
In the below diagram, we can observe the remote access is been established to safeguard the data transfers.
![](https://cyberrubik.com/wp-content/uploads/2020/08/vn.png)
Types of VPN’s
SSL( Secure Socket Layer) | To provide secure web browsing The lock symbol ![]() |
TLS(Transport Layer Security) | Provides encryption to safeguard communications and replaced the SSL. |
L2TP(Layer 2 Tunnelling Protocol) | It can be used as VPN with the addition of protocols in order to provide the encryption. |
PPTP(Point to point Tunneling) | Supports dial-up networks |
IPSEC(Internet Protocol Security) | Suite of protocols for encrypted connections |