Building & Managing Virtual Private Networks by Dave Kosiur

By Dave Kosiur

Every thing you must find out about choosing, designing, development, and handling the correct VPN in your corporation development and dealing with digital inner most Networks Get whole solutions to your whole VPN questions in construction and coping with digital inner most Networks. foreign networking guru Dave Kosiur presents a candid evaluation of the present nation of VPN expertise. With the aid of attention-grabbing and informative case reviews in keeping with the stories of businesses on the leading edge of the VPN revolution, he truly explains the fundamental techniques and applied sciences concerned, in addition to the company purposes for making the swap to an Internet-based community. And he offers useful advice on all features of designing, development, and handling the easiest VPN in your association. You get the entire lowdown on:
* the professionals and cons of all VPN forms now available
* All significant sessions of VPN and software
* Key VPN layout matters and enterprise solutions
* unique price comparison
* choosing the right ISP on your VPN
* construction a high-performance extranet
* distant access
* VPN safeguard threats and suggestions, together with best-in-class cryptographic techniques
* Firewalls and routers

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To help with the assignment of a large number of addresses, IP addresses are divided into three major classes: A, B, and C. A fourth class, D, is reserved for special uses such as multicasting. 2. Each address consists of four octets, or sets of eight binary digits, separated by decimals. The first octet determines which class the IP address is in. Class A addresses use the last three octets to specify IP nodes; Class B addresses use the last two octets for this purpose; and Class C addresses use the last octet.

Reliability and performance. Because Internet–based VPNs depend on the Internet, they are subject to the same performance problems that Internet traffic experiences. One solution is not to use the public Internet for your VPN but to employ a service provider’s private IP network, although even these networks have not yet reached the reliability of traditional networks. Furthermore, Internet VPNs can incur reliability and performance problems due to congestion, dropped packets, and other factors, which could cause problems for real–time applications, such as telephony and videoconferencing.

Security gateways sit between public and private networks, preventing unauthorized intrusions into the private network. They also may provide tunneling capabilities and encrypt private data before it’s transmitted on the public network. Previous Table of Contents Next Building and Managing Virtual Private Networks by Dave Kosiur Wiley Computer Publishing, John Wiley & Sons, Inc. ISBN: 0471295264 Pub Date: 09/01/98 Previous Table of Contents Next In general, a security gateway for a VPN fits into one of the following categories: routers, firewalls, integrated VPN hardware, and VPN software.

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