Introduction

A Virtual Private Network (VPN) is a method of making a protected connection ‘from’ and ‘to’ a computer or a network. The Virtual Private Network (VPN) utilizes restricted and strong encryption, private data access which keeps the data secure from different clients of the basic network, which could frequently be a public network like the Internet. Virtual Private Network has been utilized for quite a long time; however, they have gotten heartier just in recent years. They are more reasonable and a lot quicker.

  1. Types of VPN
  2. Types of VPN protocols

1) Types of VPN

Virtual Private Network (VPN) makes an encrypted connection, known as a virtual private network tunnel, and all internet traffic and correspondence is gone through this secure tunnel. Hence, keeping the client data private and secure.

There are 2 fundamental types of vpn that are clarified below.

  • Remote Access Virtual Private Network:

Remote access virtual private network grants a client to associate with a private network and access every one of its resources and services remotely. The connection between the private network and the user happens through the Internet, and the connection is private and secure. Remote access virtual private network is helpful for both business and home users. 

A corporate employee, while he or she is out of the station, utilizes a virtual private network to connect with his or her organization’s private network and distantly access resources and files on the private network. Home users or private users of a virtual private network, principally use virtual private network services to sidestep local limitations on the Internet and access impeded sites. Users mindful of Internet security likewise use virtual private network services to upgrade their Internet privacy and security.

  • The Site-to-Site Virtual Private Network:

A site-to-site virtual private network is additionally called a router-to-router virtual private network and is ordinarily utilized in huge organizations. Organizations or companies, with branch workplaces in various areas, use a site-to-site virtual private network to interface the network of one office area to the network at another office area. 

  1. Intranet-based Virtual Private Network: When a few workplaces of a similar organization are connected utilizing a site-to-site virtual private network type, it is called an intranet-based virtual private network.
  2. Extranet based Virtual Private Network: When organizations utilize a site-to-site virtual private network type to connect with the workplace of another organization, it is called an extranet based virtual private network.

Essentially, a site-to-site virtual private network makes a fanciful scaffold between the networks at topographically far-off offices and connects them through the Internet, and supports private and secure correspondence between the networks. In a site-to-site virtual private network, one switch goes about as a virtual private network client, and another switch as a virtual private network server as it depends on router-to-router correspondence. At the point when the verification is approved between the two switches, only then the correspondence begins.

2) Types of VPN protocols

The above 2 Virtual Private Network types depend on various types of vpn protocols. Every one of these Virtual Private Network protocols offers various levels of security and features, and are clarified below: 

Internet Protocol Security (IPSec):

Internet Protocol Security (IPSec), is utilized to get Internet correspondence across an IP network. Internet Protocol Security gets Internet Protocol correspondence by checking the meeting and encrypts every data parcel during the connection. 

Internet Protocol Security runs in 2 modes such as tunnelling mode and transport mode to ensure data moves between two distinct networks.

The work of tunnelling mode is to encrypt the entire data parcel, and the transport mode is to encrypt the message in the data bundle. Internet protocol security can likewise be utilized with other security protocols to improve the security framework.

Layer 2 Tunneling Protocol (L2TP):

Layer 2 Tunneling Protocol (L2TP) is a tunnelling protocol that is frequently joined with another virtual private network security convention like Internet Protocol Security to set up an exceptionally secure Virtual Private Network connection. Layer 2 tunnelling protocol produces a passage between 2 L2TP connection focuses and the Internet Protocol Security protocol encrypts the data and keeps up a secure correspondence between the tunnel. 

Point–to–Point Tunneling Protocol (PPTP):

Point–to–Point Tunneling Protocol (PPTP) produces a tunnel and limits the data bundle. Point-to-Point Protocol is utilized to encrypt the data between the connection. The point-to-point protocol is perhaps the most generally utilized virtual private network protocol and has been being used since the early arrival of Windows. Point-to-Point Protocol is additionally utilized on Linux and Mac separated from Windows.

TLS and SSL: 

TLS (Transport Layer Security) and SSL (Secure Sockets Layer) create a virtual private network connection where the internet browser goes about as the user, and client access is precluded to explicit applications rather than the whole network. Web-based shopping sites ordinarily use Transport Layer Security and Secure Sockets Layer protocol. It is not difficult to change to Secure Sockets Layer by internet browsers and with basically no activity needed from the client as internet browsers come incorporated with TLS and SSL. Secure Sockets Layer connections have “HTTPS” in the underlying of the URL rather than “HTTP”. 

Secure Shell (SSH):

Secure Shell (SSH) creates the virtual private network tunnel through which the data move happens and guarantees that the tunnel is encoded. Secure Shell connections are produced by a Secure Shell customer, and data is moved from a neighbourhood port onto the distant server through the encoded tunnel.

Conclusion

Virtual Private Network (VPN) that permits a client to connect with a private network over the Internet privately and securely. Choosing which Virtual Private Network is the best isn’t simple. It relies upon many components, like the number of clients, cost, security, and bandwidth.

For singular clients, Point–to–point protocol virtual private network offers the best arrangement, however, for huge workplaces or ones with complex prerequisites for connectivity, Multi-protocol label switching virtual private network may be the most ideal choice. Multi-protocol label switching is nothing but bad for distant access for singular clients, yet for site-to-site connectivity, they’re the most scalable and flexible alternative.

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