All About VPN
A VPN or Virtual Private Network is a connection method which is one of the smartest ways to protect your online privacy and add security to your private as well as a public network. It provides users with a virtual network that is private so that they can connect to the internet in a way that is safe and secure. To keep the private information secured is the ultimate goal of a VPN.
Working of VPN:
After downloading and installation of VPN software on our device you have to select your preferable security settings and set a secured connection with the desired VPN server. After the establishment of the connection following things will happen with the data:
- Encryption of data traffic on your computer takes place by the VPN software and through a secured data connection it is sent to the VPN server.
- The decryption of the encrypted data from your computer is done by the VPN server.
- Your data is sent to the internet by the VPN server and receive a reply which is meant for the user.
- Encryption of the traffic is done again by the VPN server and is sent back to the user.
- Data on your device will be decrypted by the software so that the user can understand and use it.
What does VPN do?
VPN is used to keep your personal information secured that can harm your privacy. Following are area were it helps:
- Your Browsing History- Internet Service Provider keeps a track of every activity you perform. The best example is the travel sites you visit, so when next time you browse for the same tickets they maintain a record of your history and display ticket fares which are high priced. Your internet service provider may sell your data or tie some information to your IP address.
- Your Devices- While using public wifi there are high chances that hacker or attacker might try to enter your device and try to steal your data or put a virus in your device, to prevent this from happening VPN can be a great help.
- IP Address and Location- IP address keeps a record of your data, thus if anybody captures your IP address can access your location, download and browsing history, and lets your ISP spy on you. It masks your actual IP address with another IP address of the server you choose, after which you can change your location setting and have unrestricted and fast access to any site by changing the server.
- Location for streaming- Whenever we travel to another region or place we may get restricted to some streaming channels or websites, you may face this same problem in your own area when you want to access other restricted sites, but by using VPN server this streaming channels or websites can be easily accessed.
What are different VPN protocols?
VPN protocols have different specifications and provide various benefits to the user based on various circumstances for example some prioritize speed while others focus on security and privacy. Following are the various VPN protocols:
- OpenVPN- OpenVPN is an open-source VPN protocol. As well as being an open-source it is one of the most secure VPN protocol. OpenVPN allows users to protect their data using essentially unbreakable AES-256 bit key encryption (amongst others), with 2048-bit RSA authentication, and a 160-bit SHA1 hash algorithm. It is suitable for all the internet activities with a little slow browsing speed at times.
- L2TP/IPSec- Layer 2 Tunnel Protocol is very popular and widely used VPN protocol. They are frequently bundled with security protocol IPSec. After implementation, it becomes one of the most secure VPN connection available. It uses AES-256 bit encryption and has no known vulnerabilities (though IPSec has allegedly been compromised by the NSA). It has good speed but gets easily blocked due to reliance on a single port.
- SSTP- Secure Socket Tunneling Protocol is another popular VPN protocol. It uses 2048-bit SSL/TLS certificates for authentication and 256-bit SSL keys for encryption. Overall, SSTP is quite secure and provide good security which is difficult to block and detect. It is supported in Windows, Linux, and BSD systems whereas android, macOS and iOS are supported by the third-party software.
- IKEv2- Internet Key Exchange version 2 is another VPN protocol developed by Microsoft and CISCO. IKEv2 is just a tunneling protocol which provides secure key exchange session, it is frequently paired with IPSec for authentication and encryption. It is fast and mobile-friendly with several open-source implementations but potentially undermined by the NSA.
- PPTP- Point-to-Point Tunneling Protocol is one of the oldest VPN protocol. PPTP was made in 1995. It was designed to work with dial-up connections and was integrated with Windows 95. As this technology progressed PPTP is no longer secure. But still, some people widely use PPTP as it offers best-fetching speed precisely due to lack of security feature, as a result, it is mostly used by online streamers or for basic web browsing.
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