There are three kinds ofvirtual secret networks ( VPNs ) . The most vernacular ones are remote access VPNs or virtual private dial - up networks ( VPDNs ) . These are user - to - LAN link used when employees of a troupe who are in remote locations require to connect to the company ’s private electronic web . A company that desire to lay up a distant - entree VPN usually outsources to an ESP or enterprise service provider . The ESP sets up a NAS ( meshing admittance host ) and also provides remote user with the software program they need for their information processing system . Then user simply dial the NAS using a bell - devoid numeral and enter the connection via their VPN client software system . VPNs put up a good third - party service for encipher , secure connection between remote user within a private connection .
The other two types of VPN are both site - to - web site , meaning that multiple situate sites are connected over a public net ( like the net ) . A site - to - site VPN requires large - scale encryption and consecrated equipment . An intranet ( watchword - protected site for company employees)-based VPN connects LAN to LAN when a caller wants to link up multiple remote connections in one secret connection . An extranet - free-base VPN connects LAN to LAN between multiple company ( such as client and provider ) so that they can do work in a share environment .
The benefits of an intranet VPN are that it is dispirited - monetary value and offers a lot of service . With a removed access VPN , though , you do stop up saving money because of the toll - free phone call . An intranet VPN is best for distant office within the same company , while a remote admittance VPN makes the most sense for a fluid employee within the party . An extranet VPN is the path to go if you want to be able to connect with masses in other line .
