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Design a complete Voice over IP (VoIP) or traditional PBX system with Asterisk, even if you have only basic telecommunications knowledge. This bestselling guide makes it easy, with a detailed roadmap that shows you how to install and configure this open source software, whether you’re upgrading your existing phone system or starting from scratch.

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The best way to stay safe online is to stop hackers before they attack - first, by understanding their thinking and second, by ethically hacking your own site to measure the effectiveness of your security. This practical, top-selling guide will help you do both. Fully updated for Windows 8 and the latest version of Linux, Hacking For Dummies, 4th Edition explores the malicious hacker's mindset and helps you develop an ethical hacking plan (also known as penetration testing) using the newest tools and techniques.

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Computer Networks, 5/e is appropriate for Computer Networking or Introduction to Networking courses at both the undergraduate and graduate level in Computer Science, Electrical Engineering, CIS, MIS, and Business Departments.

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The physical linkages responsible for carrying a company's data continue to be the most neglected components of the typical network to the extent that nearly 70 per cent of all network-related problems result from poor cabling. In this third edition of a widely acclaimed resource, three networking experts share their extensive experience, teaching you the cabling skills you need to build a reliable, efficient, and cost-effective network cabling infrastructure.

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