Tunneling in two halves. VPN (Virtual Private Network) refers to the ability to establish a secure network connection when using public networks.
VPNs encrypt your internet traffic and conceal your identity online. This makes it more difficult for third parties to follow your internet activities and steal information. There are two encryption modes in IPSec: tunnel and transport. VPNs are classified into two types: intranet VPNs and extranet VPNs. Before using a VPN, you should have a solid firewall in place, but a firewall can also be used to terminate VPN sessions. A virtual private network (VPN) is a network that uses a public telecommunications infrastructure, such as the Internet, to give secure access to an organization's network to remote offices or individual users.
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