Let’s look at some real examples of VPNs. Health Care Company Intranet Deployment Here we have a health care company that’s deploying an intranet. Well, why would they…

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Intranet VPNs: Link corporate headquarters, remote offices, and branch offices over a shared infrastructure using dedicated connections. Businesses enjoy the same policies as a private network, including security,…

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An access VPN has two basic components: L2TP Network Server (LNS): A device such as a Cisco router located in the customer premises. Remote dial users access the home…

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Three Types of VPNs Let’s look now at the three types of VPNs. Access, Intranet, and Extranet VPNs As previously stated, VPN is defined as customer connectivity deployed…

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Now that you understand both IPSec and IKE, let’s look at what really happens from the client’s perspective. An IPSec client is a software component that allows a…

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GRE, or Generic Routing Encapsulation, is the standard solution for Service Providers that have an established IP network and want to provide managed IP VPN services.  One of…

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Let’s take a look at some of the technologies that are integral to virtual private networks. VPN Technology Building Blocks Business-ready VPNs rely on both security and QoS…

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The strain on today’s corporate networks is greater than ever before. Network managers must continually find ways to connect geographically dispersed work groups in an efficient, cost-effective manner….

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Simply defined, a VPN is an enterprise network deployed on a shared infrastructure employing the same security, management, and throughput policies applied in a private network. A VPN…

Computer Network Tutorial