Download or read book Practical VoIP Security written by Thomas Porter, CISSP, CCNP, CCDA, CCS and published by Elsevier. This book was released on 2006-03-31 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Understanding Voice Over IP Security written by Alan B. Johnston and published by Artech House Publishers. This book was released on 2006 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: VoIP (voice over IP) networks are currently being deployed by enterprises, governments, and service providers around the globe. Today, the hottest topic with engineers in the field is how to secure these networks. The book teaches practitioners how to design a highly secure VoIP network, explains Internet security basics, such as attack types and methods, and more.

Download or read book How to Cheat at VoIP Security written by Thomas Porter CISSP CCNP CCDA CCS and published by Syngress. This book was released on 2011-04-18 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Perfect Reference for the Multitasked SysAdmin This is the perfect guide if VoIP engineering is not your specialty. It is the perfect introduction to VoIP security, covering exploit tools and how they can be used against VoIP (Voice over IP) systems. It gives the basics of attack methodologies used against the SIP and H.323 protocols as well as VoIP network infrastructure. * VoIP Isn’t Just Another Data Protocol IP telephony uses the Internet architecture, similar to any other data application. However, from a security administrator’s point of view, VoIP is different. Understand why. * What Functionality Is Gained, Degraded, or Enhanced on a VoIP Network? Find out the issues associated with quality of service, emergency 911 service, and the major benefits of VoIP. * The Security Considerations of Voice Messaging Learn about the types of security attacks you need to protect against within your voice messaging system. * Understand the VoIP Communication Architectures Understand what PSTN is and what it does as well as the H.323 protocol specification, and SIP Functions and features. * The Support Protocols of VoIP Environments Learn the services, features, and security implications of DNS, TFTP, HTTP, SNMP, DHCP, RSVP, SDP, and SKINNY. * Securing the Whole VoIP Infrastructure Learn about Denial-of-Service attacks, VoIP service disruption, call hijacking and interception, H.323-specific attacks, and SIP-specific attacks. * Authorized Access Begins with Authentication Learn the methods of verifying both the user identity and the device identity in order to secure a VoIP network. * Understand Skype Security Skype does not log a history like other VoIP solutions; understand the implications of conducting business over a Skype connection. * Get the Basics of a VoIP Security Policy Use a sample VoIP Security Policy to understand the components of a complete policy. Provides system administrators with hundreds of tips, tricks, and scripts to complete administration tasks more quickly and efficiently Short on theory, history, and technical data that ultimately is not helpful in performing their jobs Avoid the time drains associated with securing VoIP

Download or read book Hacking Exposed VoIP Voice Over IP Security Secrets Solutions written by David Endler and published by McGraw Hill Professional. This book was released on 2007 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Securing VoIP Networks written by Peter Thermos and published by Pearson Education. This book was released on 2007-08-01 with total page 605 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Hacking VoIP written by Himanshu Dwivedi and published by No Starch Press. This book was released on 2009 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Voice over Internet Protocol (VoIP) networks, the technology used to place phone calls through the Internet, suffer from the same security holes as standard IP networks. This book reviews the many possible VoIP attacks, and discusses the best defenses against them.

Download or read book Voice over IP in Wireless Heterogeneous Networks written by Hanane Fathi and published by Springer Science & Business Media. This book was released on 2008-10-20 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this book is on mechanisms that affect the VoIP user satisfaction while not explicitly involved in the media session. The book thus investigates and proposes cross-layer techniques for realizing time-efficient control mechanisms for VoIP.

Download or read book Packet Guide to Voice Over IP written by Bruce Hartpence and published by "O'Reilly Media, Inc.". This book was released on 2013 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A system administrator's guide to VoIP technologies"--Cover.

Download or read book Voice over IP Security written by Angelos D. Keromytis and published by Springer Science & Business Media. This book was released on 2011-03-30 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Voice over IP (VoIP) and Internet Multimedia Subsystem technologies (IMS) are rapidly being adopted by consumers, enterprises, governments and militaries. These technologies offer higher flexibility and more features than traditional telephony (PSTN) infrastructures, as well as the potential for lower cost through equipment consolidation and, for the consumer market, new business models. However, VoIP systems also represent a higher complexity in terms of architecture, protocols and implementation, with a corresponding increase in the potential for misuse. In this book, the authors examine the current state of affairs on VoIP security through a survey of 221 known/disclosed security vulnerabilities in bug-tracking databases. We complement this with a comprehensive survey of the state of the art in VoIP security research that covers 245 papers. Juxtaposing our findings, we identify current areas of risk and deficiencies in research focus. This book should serve as a starting point for understanding the threats and risks in a rapidly evolving set of technologies that are seeing increasing deployment and use. An additional goal is to gain a better understanding of the security landscape with respect to VoIP toward directing future research in this and other similar emerging technologies.

Download or read book Securing VoIP written by Regis J. Jr (Bud) Bates and published by Elsevier. This book was released on 2014-11-14 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Securing VoIP: Keeping Your VoIP Network Safe will show you how to take the initiative to prevent hackers from recording and exploiting your company’s secrets. Drawing upon years of practical experience and using numerous examples and case studies, technology guru Bud Bates discusses the business realities that necessitate VoIP system security and the threats to VoIP over both wire and wireless networks. He also provides essential guidance on how to conduct system security audits and how to integrate your existing IT security plan with your VoIP system and security plans, helping you prevent security breaches and eavesdropping. Explains the business case for securing VoIP Systems Presents hands-on tools that show how to defend a VoIP network against attack. Provides detailed case studies and real world examples drawn from the authors’ consulting practice. Discusses the pros and cons of implementing VoIP and why it may not be right for everyone. Covers the security policies and procedures that need to be in place to keep VoIP communications safe.

Download or read book VoIP Handbook written by Syed A. Ahson and published by CRC Press. This book was released on 2008-12-18 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: The number of worldwide VoIP customers is well over 38 million. Thanks to the popularity of inexpensive, high-quality services, it's projected to increase to nearly 250 million within the next three years. The VoIP Handbook: Applications, Technologies, Reliability, and Security captures the state of the art in VoIP technology and serves as the comprehensive reference on this soon-to-be ubiquitous technology. It provides: A step-by-step methodology to evaluate VoIP performance prior to network implementation An invaluable overview of implementation challenges and several VoIP multipoint conference systems Unparalleled coverage of design and engineering issues such VoIP traffic, QoS requirements, and VoIP flow As this promising technology’s popularity increases, new demands for improved quality, reduced cost, and seamless operation will continue to increase. Edited by preeminent wireless communications experts Ahson and Illyas, the VoIP Handbook guides you to successful deployment.

Download or read book VoIP Telephony and You written by Rashmi Nanda and published by BPB Publications. This book was released on 2021-05-10 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Game Changer for WFH Practitioners Ê KEY FEATURESÊÊ _ Get to know the challenges and benefits of VoIP. _ Explore in-depth coverage on methodologies of the VoIP system. _ Includes the VoIP economic model, technology model, and in-practices. DESCRIPTIONÊ ÔVoIP Telephony and YouÕ introduces you to new and advanced ways of communicating over traditional telephony realms. Telcos use public internet private IPs for this long-distance voice communication in the Covid era. This book describes how VoIP encompasses the capability to encode and deliver content in real-time across digitized networks. In this book, you will learn about VoIP regulations, VoIP hardware and software, video conferencing servers, SWOT analysis of Telcos, switching technology. You will also learn about the TCP/IP, market, Economics model, business model, and technology models. You will learn how to eliminate echo by understanding the various interfaces of VoIP and a number of digital protocols.This book will also provide you with a solution to design and maintain communication systems that can be used reliably in the Covid-19 times. This book includes several best practices and security measures to secure conversations by use of surveillance methods and VoIP security provisions.ÊÊ WHAT YOU WILL LEARN _ Learn to establish a strong and robust digital communication for WFH business operations. _ Explore and evaluate buyingÊ decisions between cloud-based phones and other VoIP devices. _ Learn to optimize utilization of the VoIP telephony devices for audio and video conferencing. WHO THIS BOOK IS FORÊÊ This book is for aspiring and current technicians, network administrators, engineers, IT managers, VoIP integrators and solution providers, mobile experts, and WFH practitioners. TABLE OF CONTENTS 1. Introduction to Voice over Internet Protocol (VoIP) 2. VoIP Video Conferencing and Corona Virus 3. VoIPÕs Challenges and Benefits and VoIP MarketÕs Independent Providers 4. Overview of Systems-Level 5. Interfaces of VoIP Telephony 6. Assurance of Voice Quality for VoIP Networks 7. Implementation of VoIP Security 8. Functionality of a Data Router 9. Technical Description related to VoIP 10. VoIP Hardware and Software Components 11. Business Model and Market Model in relation with Internet Telephony 12. Technology, Economics and In-Practice to be concerned with IP telephony 13. VoIP to be Concluded

Download or read book Voice over Internet Protocol VoIP Security written by James F. Ransome, PhD, CISM, CISSP and published by Elsevier. This book was released on 2005-01-19 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Voice Over Internet Protocol Security has been designed to help the reader fully understand, prepare for and mediate current security and QoS risks in today’s complex and ever changing converged network environment and it will help you secure your VoIP network whether you are at the planning, implementation, or post-implementation phase of your VoIP infrastructure. * This book will teach you how to plan for and implement VoIP security solutions in converged network infrastructures. Whether you have picked up this book out of curiosity or professional interest . . . it is not too late to read this book and gain a deep understanding of what needs to be done in a VoIP implementation. * In the rush to be first to market or to implement the latest and greatest technology, many current implementations of VoIP infrastructures, both large and small, have been implemented with minimal thought to QoS and almost no thought to security and interoperability.

Download or read book Voice Over IP Networks written by Marcus Gonçalves and published by McGraw-Hill Companies. This book was released on 1999 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once a guest on telephone lines, the Net now threatens a takeover of its host's principal function: voice-to-voice communications. For intrabusiness use or as a public system, Internet-based telephony can be a real money-saver - or money-maker. In Voice Over IP Networks, you'll learn everything you need to: transmit real-time voices over the Internet; understand the technology and its costs; compare leading vendors and their Internet telephony products - 3Com, Motorola, Lucent, VocalTec, Vienna Systems, Nuera Communications, and more; evaluate advantages of the IPv6 and IPv4 protocols; use RSVP, RTSP, IP Multicast, SONET, ATM, and other technologies for telephony; apply Codecs to voice digitization; emulate T1/E1 trunks; implement a system with appropriate standards; and anticipate trends and new products from innovative companies such as QWest.

Download or read book SIP Security written by Dorgham Sisalem and published by John Wiley & Sons. This book was released on 2009-03-23 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a detailed overview of SIP specific security issues and how to solve them While the standards and products for VoIP and SIP services have reached market maturity, security and regulatory aspects of such services are still being discussed. SIP itself specifies only a basic set of security mechanisms that cover a subset of possible security issues. In this book, the authors survey important aspects of securing SIP-based services. This encompasses a description of the problems themselves and the standards-based solutions for such problems. Where a standards-based solution has not been defined, the alternatives are discussed and the benefits and constraints of the different solutions are highlighted. Key Features: Will help the readers to understand the actual problems of using and developing VoIP services, and to distinguish between real problems and the general hype of VoIP security Discusses key aspects of SIP security including authentication, integrity, confidentiality, non-repudiation and signalling Assesses the real security issues facing users of SIP, and details the latest theoretical and practical solutions to SIP Security issues Covers secure SIP access, inter-provider secure communication, media security, security of the IMS infrastructures as well as VoIP services vulnerabilities and countermeasures against Denial-of-Service attacks and VoIP spam This book will be of interest to IT staff involved in deploying and developing VoIP, service users of SIP, network engineers, designers and managers. Advanced undergraduate and graduate students studying data/voice/multimedia communications as well as researchers in academia and industry will also find this book valuable.

Download or read book Voice and Data Security written by Gregory B. White and published by Sams Publishing. This book was released on 2001 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Data and Voice Security" will enable readers to protect data networks from the most common threats. Learn what security vulnerabilities currently exist in data networks, and become aware of the threats the telephone network poses to the data network. Use updated information to protect the data network from the telephone network

Download or read book Hacking Exposed Unified Communications VoIP Security Secrets Solutions Second Edition written by Mark Collier and published by McGraw Hill Professional. This book was released on 2013-12-20 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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