VPN represents the virtual private network. It is an encrypted connection over the web from a device to a network. The encrypted connection helps provide that sensitive information is safely transmitted. It avoids unauthorized persons from eavesdropping on the traffic and enables the user to manage work remotely. VPN technology is broadly used in corporate environments.
A VPN protects your IP address by allowing the network to redirect it through a specially configured remote server run by a VPN host. This defines that if you surf online with a VPN, the VPN server becomes the source of your information. This defines your Internet Service Provider (ISP) and other third parties cannot view which websites you visit or what data you send and receive online. A VPN operates like a filter that passes all your data into "gibberish".
In virtual private network, it define a safe and encrypted network that enables us to use web resources in a remote manner. Using VPN, it can make a safe connection over a less secure network, such as internet. It is a secure network as it is wholly isolated from rest of the internet. The government, businesses, military can help this network to use web resources securely.
There are various types of VPN which are as follows −
A site-to-site VPN is created to securely connect two geographically assigned sites. VPN functionality is contained in most security gateways. For instance, a next-generation firewall (NGFW) set up at the edge of a network protects the corporate network and also delivers as a VPN gateway.
Remote Access VPN
A remote-access VPN is created to link remote users securely to a corporate system. For example when the COVID-19 pandemic appeared in 2020, some organizations passed to a remote workforce, and set up secure remote access VPNs from the remote clients to connect to critical business services at the corporate section.
VPN as a Service
VPN as a Service or a cloud VPN is a VPN hosted in a cloud-based infrastructure where packets from the client enter the web from that cloud infrastructure rather than the client’s local address. Consumer VPNs generally use this model, allowing users to secure themselves while linking to the Internet via insecure public Wi-Fi and supports some anonymity while penetrating the Internet.
A VPN’s encrypted connection creates it inaccessible for a third party to eavesdrop on the connection without information of the secret keys used for encryption and securing the information while in transit.
Simplified Distributed Networks
Any computers approachable from the public Internet are required to have public IP addresses either directly or by the way of Network Address Translation (NAT). A site-to-site VPN simulates a direct link between the two networks, allowing them to use private IP addresses for internal traffic.