Internet Telephony Secrets PDF Download

Author:
Publisher: Liberty Straits Solutions
ISBN: 9834294603
Category :
Languages : en
Pages : 67

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Author: David Endler
Publisher: McGraw Hill Professional
ISBN: 0072263644
Category : Computers
Languages : en
Pages : 576

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Book Description
Sidestep VoIP Catastrophe the Foolproof Hacking Exposed Way "This book illuminates how remote users can probe, sniff, and modify your phones, phone switches, and networks that offer VoIP services. Most importantly, the authors offer solutions to mitigate the risk of deploying VoIP technologies." --Ron Gula, CTO of Tenable Network Security 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 are covered alongside detailed countermeasures, in-depth examples, and hands-on implementation techniques. Inside, you'll learn how to defend against the latest DoS, man-in-the-middle, call flooding, eavesdropping, VoIP fuzzing, signaling and audio manipulation, Voice SPAM/SPIT, and voice phishing attacks. Find out how hackers footprint, scan, enumerate, and pilfer VoIP networks and hardware Fortify Cisco, Avaya, and Asterisk systems Prevent DNS poisoning, DHCP exhaustion, and ARP table manipulation Thwart number harvesting, call pattern tracking, and conversation eavesdropping Measure and maintain VoIP network quality of service and VoIP conversation quality Stop DoS and packet flood-based attacks from disrupting SIP proxies and phones Counter REGISTER hijacking, INVITE flooding, and BYE call teardown attacks Avoid insertion/mixing of malicious audio Learn about voice SPAM/SPIT and how to prevent it Defend against voice phishing and identity theft scams

Author: Mark Collier
Publisher: McGraw Hill Professional
ISBN: 0071798773
Category : Computers
Languages : en
Pages : 561

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Book Description
The latest techniques for averting UC disaster Establish a holistic security stance by learning to view your unified communications infrastructure through the eyes of the nefarious cyber-criminal. Hacking Exposed Unified Communications & VoIP, Second Edition offers thoroughly expanded coverage of today’s rampant threats alongside ready-to deploy countermeasures. Find out how to block TDoS, toll fraud, voice SPAM, voice social engineering and phishing, eavesdropping, and man-in-the-middle exploits. This comprehensive guide features all-new chapters, case studies, and examples. See how hackers target vulnerable UC devices and entire networks Defend against TDoS, toll fraud, and service abuse Block calling number hacks and calling number spoofing Thwart voice social engineering and phishing exploits Employ voice spam mitigation products and filters Fortify Cisco Unified Communications Manager Use encryption to prevent eavesdropping and MITM attacks Avoid injection of malicious audio, video, and media files Use fuzzers to test and buttress your VoIP applications Learn about emerging technologies such as Microsoft Lync, OTT UC, other forms of UC, and cloud and WebRTC

Author: Abdul Sattar Mohmand
Publisher: Lulu.com
ISBN: 1435731654
Category : Technology & Engineering
Languages : en
Pages : 255

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Book Description
VoIP or Voice Over Internet Protocol is an emerging telecommunication technology that make use of IP network to carry voice just like PSTN (Public Switched Telephone Network) or traditional phones. There are several companies offering low cost and more flexible phones and packages of VoIP systems. Future belongs to VoIP because of its low cost and flexibility and more control.This innovative technology will change the life of people because the dream of video phone is just behind its bars. This book covers the basic architecture, usefulness, challenges and features of the VoIP Phones systems.

Author: Paul Thurrott
Publisher: John Wiley & Sons
ISBN: 1118006615
Category : Computers
Languages : en
Pages : 635

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Book Description
Written with unequalled internal access to the Window's Phone Team, thisbookwill reveal to you the inner workings of Windows Phone and how to make it work the way you want it to. Personalized notations, interior elements, and author highlights emphasize key content throughout the book, making it easier for you to navigate the book. The book begins by showing you to select and setup the right Windows Phone, then moves on to discuss integrated experiences, applications and hubs, games, and much more.

Author: Thomas Porter CISSP CCNP CCDA CCS
Publisher: Elsevier
ISBN: 0080489559
Category : Computers
Languages : en
Pages : 592

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Book Description
Voice Over IP (VoIP) phone lines now represent over 50% of all new phone line installations. Every one of these new VoIP phone lines and handsets must now be protected from malicious hackers because these devices now reside on the network and are accessible from the Internet just like any server or workstation.This book will cover a wide variety of the publicly available exploit tools and how they can be used specifically against VoIP (Voice over IP) Telephony systems. The book will cover the attack methodologies that are used against the SIP and H.323 protocols as well as VoIP network infrastructure. Significant emphasis will be placed on both attack and defense techniques. This book is designed to be very hands on and scenario intensive· More VoIP phone lines are being installed every day than traditional PBX phone lines· VoIP is vulnerable to the same range of attacks of any network device· VoIP phones can receive as many Spam voice mails as your e-mail can receive Spam e-mails, and as result must have the same types of anti-spam capabilities

Author: Zhijun Wu
Publisher: Syngress
ISBN: 0128014814
Category : Computers
Languages : en
Pages : 200

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Book Description
In the digital world, the need to protect communications increases every day. While traditional digital encryption methods are useful, there are many other options for hiding your information. Information Hiding in Speech Signals for Secure Communication provides a number of methods to hide secret speech information using a variety of digital speech coding standards. Professor Zhijun Wu has conducted years of research in the field of speech information hiding, and brings his state-of-the-art techniques to readers of this book, including a mathematical model for information hiding, the core concepts of secure speech communication, the ABS-based information hiding algorithm, and much more. This book shows how to implement a secure speech communication system, including applications to various network security states. Readers will find information hiding algorithms and techniques (embedding and extracting) that are capable of withstanding the advanced forms of attack. The book presents concepts and applications for all of the most widely used speech coding standards, including G.711, G.721, G.728, G.729 and GSM, along with corresponding hiding and extraction algorithms. Readers will also learn how to use a speech covert communication system over an IP network as well as a speech secure communication system applied in PSTN. - Presents information hiding theory and the mathematical model used for information hiding in speech. - Provides a number of methods to hide secret speech information using the most common digital speech coding standards. - A combination of practice and theory enables programmers and system designers not only to implement tried and true encryption procedures, but also to consider probable future developments in their designs.

Author: David Grimmett
Publisher: Lulu.com
ISBN: 1329391918
Category : Business & Economics
Languages : en
Pages : 110

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Book Description
A Journal Presentation Format for the use of Graduate Students in Applied Business Research, MGT 5000. This edition contains articles on background checks, steganography and cryptography, triathlon analysis, stock picking, employee engagement, WalMart's turnover rate, education advancements, felons in the business world and aquaponics.

Author: Peter Thermos
Publisher: Pearson Education
ISBN: 0132702304
Category : Computers
Languages : en
Pages : 606

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Book Description
In Securing VoIP Networks, two leading experts systematically review the security risks and vulnerabilities associated with VoIP networks and offer proven, detailed recommendations for securing them. Drawing on case studies from their own fieldwork, the authors address VoIP security from the perspective of real-world network implementers, managers, and security specialists. The authors identify key threats to VoIP networks, including eavesdropping, unauthorized access, denial of service, masquerading, and fraud; and review vulnerabilities in protocol design, network architecture, software, and system configuration that place networks at risk. They discuss the advantages and tradeoffs associated with protection mechanisms built into SIP, SRTP, and other VoIP protocols; and review key management solutions such as MIKEY and ZRTP. Next, they present a complete security framework for enterprise VoIP networks, and provide detailed architectural guidance for both service providers and enterprise users. 1 Introduction 2 VoIP Architectures and Protocols 3 Threats and Attacks 4 VoIP Vulnerabilites 5 Signaling Protection Mechanisms 6 Media Protection Mechanisms 7 Key Management Mechanisms 8 VoIP and Network Security Controls 9 A Security Framework for Enterprise VoIP Networks 10 Provider Architectures and Security 11 Enterprise Architectures and Security

Author: The Washington Post
Publisher: Diversion Books
ISBN: 1626812128
Category : Political Science
Languages : en
Pages : 256

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Book Description
The Pulitzer Prize–winning investigation into surveillance abuses and the Edward Snowden case that brought them to light. The NSA's extensive surveillance program has led Americans to question threats to their privacy. As reported by the Washington Post, in their Pulitzer Prize-winning coverage of whistleblower Edward Snowden's NSA leaks, NSA Secrets delves into the shadowy world of information gathering, exposing how data about you is being collected every day. From his earliest encrypted exchanges with reporters, Edward Snowden knew he was a man in danger. Sitting on a mountain of incriminating evidence about the NSA surveillance programs, Snowden was prepared to risk his freedom, and his very life, to let the world know about the perceived overreach of the NSA and the massive collection of personal information that was carried out in the name of national security by the U.S. government. The Washington Post’s complete coverage of the NSA spying scandal, which it helped break, is now collected in one place to give as comprehensive a view of the story as is known. From the first contact with Snowden to the latest revelations in worldwide cellphone tracking, the award-winning reporters at the Post have vigorously reported on the scope of the NSA’s surveillance. Snowden called the internet “a TV that watches you,” and accused the government of “abusing [it] in secret to extend their powers beyond what is necessary and appropriate.” Here, the secrets of those who tried in vain to remain in the shadows are revealed.