Virtual Private Network (VPN)
a communication technology that allows it to be connected to a public network and use it to be able to join a local network. In this way it will get the same rights and settings as in the LAN itself, even though it actually uses a public network.
From the perspective of the network, one of the problems of the internet network (public IP) is that it does not have good support for security. Whereas from the company’s perspective, IP is a basic need to exchange data between branch offices or with company partners. VPN appears to resolve the issue. A corporate network that uses IP infrastructure to connect with its branch offices by way of private addressing by securing data packet transmissions.
VPN technology has the ability to authenticate the data sending sources that it will receive. VPN will check all incoming data and retrieve information from its data source. Then, the address of the data source will be approved if the authentication process is successful. Thus, the VPN guarantees that all data sent and received comes from the source that should be. No data is forged or sent by other parties.
Benefits of VPN
The following are the benefits of VPN:
Remote Access: This means that by using a VPN we can access a computer or office network, from anywhere as long as it is connected to the internet or public network.
Security: by using a VPN connection we can browse, search safely when accessing cyberspace or public internet
Can save network setup costs: VPN can also be used as an alternative way to connect a large enough local network at a lower cost. Because data transmission used on VPN uses internet network media or public networks that previously existed without the need to build their own network.
How to work & use VPN
VPN supports many network protocols such as PPTP, L2TP, IPSec and SOCKS. This protocol helps the way VPN works to process authentication.VPN clients can establish connections and identify people who are authorized on the network.Also encrypted VPN networks will increase security features, this also means that VPNs are usually not visible on larger networks.
Advantages and Disadvantages of VPN
Advantages of VPN:
VPN is a cost effective solution for large business organizations with special network facilities Increase organizational mobility by directly connecting home networks or mobile workers in the organization. The security feature can be adjusted.
By providing access to employees globally, the security factor is a separate risk. It also places sensitive company information globally. VPN requires extra attention to establishing a clear security system.
Apart from its drawbacks, there are many solutions offered by VPN that provide remote connectivity, file sharing, video conferencing and other network-related services. Various features that have been offered through internet services can be offered through