VPN+Service


 * VPNs Service**

Large network service providers such as Compuserve, IBM Global Services, AT&T, Sprint and MCI have begun to offer VPN services to large and small businesses. These services are typically defined by the providers as managed TCP/IP networks with strict access controls and some level of network privacy. Successful VPN service providers leverage their vast network transport facilities (e.g. Public Switched Telephone Network [PSTN], Synchronous Optical Networks [SONET], Frame Relay Networks, and Asynchronous Transfer Mode [ATM] Networks) across a wide client base to transmit customer data more cost effectively. The value proposition for the customer is created by the providers passing on these efficiencies in the form of lower costs while offering the advantages of a private or dedicated networking.

Internet Service Providers (ISPs) already used the model of shared TCP/IP based networks to deliver low cost transport services. ISPs are using VPN technology to provide a greater degree of privacy and access controls to their Internet-based networks. These privacy enhancements are targeted at corporate customers who feel the public Internet is too risky for their mission critical corporate data.

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