Block debilitating VoIP attacks by learning how to look at your network and devices through the eyes of the malicious intruder. Hacking Exposed VoIP shows you, step-by-step, how online criminals perform reconnaissance, gain access, steal data, and penetrate vulnerable systems. All hardware-specific and network-centered security issues...

• Enable a full cost-effective unified communications server solution
• Go from a single server configuration to a...

You've just gotta love Ubuntu; it's an irresistible package of usability, security, and support features. But a power user like you is just itching to teach it some new tricks. Show it how to play nicely with other systems. Develop its multitasking and communication skills. Free its inner video and graphics talents. And make sure that when it...

This book is intended for developers wishing to utilize Asterisk, system administrators wishing to gain better control over their Asterisk installation, and telephony service providers wishing to deploy Asterisk-based solutions to their infrastructure. You are expected to have some...

Now that you've got a wireless network going, you're getting the urge to see what else it can do, right? Hook up with this book and find simple, fun ways to expand its possibilities. Add your home...

The technology of voice over IP provides for making telephone calls over data networks such as the Internet and it has now reached critical mass. I know this because as a technology instructor I spend more and more time teaching Voice over IP or “VoIP.” I wrote this book because I couldn’t find any material suitable...

Since 2001, the iPod has changed the way we listen to our music. It has allowed us to carry virtually our entire music collection around with us in a beautiful little package, and thanks to its unique scroll wheel, it has made that beautiful little package easy to navigate. Each year the iPod has evolved, getting physically smaller while its...