What is a VPN
A Virtual Private Network, shortly called VPN allows users to send and receive the data in an anonymous mode. It also helps to the access blocked content on the Internet. It comes under the concept of tunneling. They also allow users to secure their online experience and remain anonymous through several encryption standards.
How VPN Works?
Generally, Internet Users connect to the Web through an Internet Service Provider and then establish a VPN connection with third-party software. Virtual Private Networks allow internet users to access the Internet from a VPN server. VPNs can be used on personal computers, laptops, or mobile devices.
A VPN is a type of connectivity that sits between an Internet user and their internet content. Few Web sites, blogs or organizations try to restrict user access to the particular internet connect. VPNs use various encryption techniques to break these restrictions, which allows the user to access blocked content.
VPN on a Router
The benefits of VPN, when installed on a Router, are:
- Expand the benefits of a VPN to all the connected devices without installing other third-party software.
- Protect you from major attacks, hacking and spying.
Types of VPN
There are various types of VPNs available for internet users which have unique characteristics in terms of security and usage. VPNs are distinguished by the types of protocols that they implement. The three vital protocols listed below compete with each other and incompatible too.
1. Point to Point Tunneling Protocol (PPTP)
Point-to-Point Tunneling Protocol (PPTP) is a network protocol used in the implementation of Virtual Private Networks. PPTP is an older protocol which is easy to setup and it has been used in Windows since Windows 95. As it is old and possesses low-security standards comparing other protocols, it is vulnerable by hackers.
2. Layer Two Tunneling Protocol (L2TP)
It is located in the 2nd layer of OSI model and is the upgraded version of Layer 2 Forwarding Protocol. As L2TP does not provide strong encryption by itself, another protocol called IPsec is commonly used in conjunction with L2TP. L2TP creates a tunnel to transfer data (information) while IPsec handles the secure encryption of the data. It is widely used in Cisco products. As L2TP encapsulates the data twice, it affects the speed of a data transmission.
IPsec is a collection of a multitude of protocols and is situated at the third layer of OSI model. It can be used as a complete VPN solution or as the encryption scheme alongsideL2TP or PPTP. Being an international standard protocol, IPsec enhances flexibility, it is easy to maintain and is more secure as well. Having to perform several encryptions and decryptions on infinite data, it might result in CPU overhead.
Benefits of VPN:
- Security- VPN enhances security by Concealing your IP address and location. Your data is encrypted and kept secured away from hackers.
- Remote access- An employee can access his official information like email remotely from home or any other place through VPN.
- Share documents- With the VPN, you can share a file with your Business group.
- Anonymous browsing- One can access the websites and web applications anonymously using VPN without Web proxies and hide IP software.
- Access blocked websites & bypass web filters- Virtual Private Networks allow the User to access blocked websites and bypass Internet filters.
- Switch IP address- If a user needs to change from one IP address to another, a Virtual Private Network does assist.
- Increased Performance- At once a VPN is implemented, bandwidth and efficiency of the network increases.
- Reduced cost- VPN is not so expensive for long distance telephone calls and it boasts reduced maintenance charges.