Read e-book online Building a Virtual Private Network PDF

By Meeta Gupta

ISBN-10: 0585456097

ISBN-13: 9780585456096

ISBN-10: 1931841810

ISBN-13: 9781931841818

Your corporation needs to be attached with a purpose to compete within the international industry. staff want to know that their company's community is out there at any time, from anyplace. A digital deepest community (VPN) accomplishes this through the use of distant connectivity applied sciences that mix present inner networks with the web to safely converse info. construction a digital inner most community is your key to designing, enforcing, and securing an absolutely hooked up community that meets your small business wishes.

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However, in case of dial-on-demand routing, VPN hardware may have a built-in VPN client. • VPN management applications and tools. These are the applications and tools that are used for the management of a VPN-based setup. These applications are used to manage, monitor, configure, and troubleshoot problems. Novell's Border Manager and Cisco Secure Policy Manager are the best-known examples of VPN management tools. Microsoft's Windows 2000 also offers various tools, such as RRAS snapin for MMC for the purpose of VPN management.

In private networks and intranets, uptime is relatively high because the entire infrastructure is proprietary and in complete control of the organization. However, VPNs use intermediate internetworks in the form of the Internet and PSTNs. Therefore, VPN-based setups are highly dependent on the intermediate internetwork. In this scenario, the availability factor is highly dependent on the Internet Service Provider (ISP) you use. Generally, ISPs ensure availability in the form of a Service Level Agreement (SLA).

Applications, such as financial transactions and order processing, are more important from the business perspective than user activities that include Web surfing. Similarly, applications such as videoconferencing are extremely delay sensitive and require enough bandwidth to avoid the poor quality of transmission and jitters. It is the responsibility of QoS to allocate sufficient bandwidth to these applications without delay. QoS is comprised of two critical dimensions—latency and throughput. Latency is the delay in an ongoing communication and is extremely important to audio and video applications.

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Building a Virtual Private Network by Meeta Gupta

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