Download Building a Virtual Private Network by Meeta Gupta PDF

By Meeta Gupta

Your corporation has to be hooked up with the intention to compete within the worldwide industry. staff want to know that their company's community is available at any time, from anyplace. A digital deepest community (VPN) accomplishes this by using distant connectivity applied sciences that mix latest inner networks with the web to soundly converse details. construction a digital inner most community is your key to designing, imposing, and securing an absolutely hooked up community that meets your online business wishes.

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As shown in Figure 2-1, VIPR works by logically partitioning a physical router located at the service provider end (as a part of the ISP's infrastructure). Each partition is configured and managed as a physical router and can support an individual VPN. In simpler terms, each logical partition is treated as a complete router with full router functionality. As a result, these logical router partitions can support multiple protocols and are capable of handling private IP addresses. Figure 2-1: A generic representation of VIPR.

Novell's IP Gateway for NetWare is one such example. It converts Chapter 2: VPN Requirements, Building Blocks, and Architectures 45 46 Chapter 2: VPN Requirements, Building Blocks, and Architectures IPX traffic to IP and vice versa. Note IPX, or Internetwork Packet eXchange, is a proprietary Novell LAN protocol. • Use of Tunneling. Tunneling, as you learned in the previous chapter, is the technique of encapsulating non-IP data packets into IP packets for transmission across IP-based infrastructure.

Chapter 2: VPN Requirements, Building Blocks, and Architectures You learned in the previous chapter that a VPN is a secure and relatively simple method of establishing intranet connectivity across public networks. VPN technology not only reduces the cost of implementing a highly secure network environment, but also reduces management and staffing costs. In addition, it offers high availability, scalability, and effective use of network bandwidth. What goes into the making of a VPN-based solution?

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