What are the main components of a VPN?
Virtual Private Network (VPN) consists of folowing main components:
Network Access Server (NAS): A NAS server is responsible for se ting up tunnels in a VPN that is accesses remotely. It maintains these tunnels that connect clients to VPN.
Firewal : It is the software that creates barrier between VPN and public network. It protects the VPN from malicious activity that can be done from the outside network.
AAA Server : This is an authentication and authorization server that controls the access and usage of VPN. For each request to use VPN, AAA server checks the user for correct permissions.
Encryption : In a VPN, encryption algorithms protect the important private data from malicious users