Securing VoIP

Securing VoIP
Author: Regis J. Jr (Bud) Bates
Publsiher: Elsevier
Total Pages: 220
Release: 2014-11-14
ISBN 10: 0124171222
ISBN 13: 9780124171220
Language: EN, FR, DE, ES & NL

Securing VoIP Book Review:

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.

Securing VoIP Networks

Securing VoIP Networks
Author: Peter Thermos,Ari Takanen
Publsiher: Pearson Education
Total Pages: 384
Release: 2007-08-01
ISBN 10: 0132702304
ISBN 13: 9780132702300
Language: EN, FR, DE, ES & NL

Securing VoIP Networks Book Review:

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

Practical VoIP Security

Practical VoIP Security
Author: Thomas Porter, CISSP, CCNP, CCDA, CCS
Publsiher: Elsevier
Total Pages: 500
Release: 2006-03-31
ISBN 10: 9780080489551
ISBN 13: 0080489559
Language: EN, FR, DE, ES & NL

Practical VoIP Security Book Review:

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

Voice over IP Security

Voice over IP Security
Author: Angelos D. Keromytis
Publsiher: Springer Science & Business Media
Total Pages: 83
Release: 2011-03-30
ISBN 10: 1441998667
ISBN 13: 9781441998668
Language: EN, FR, DE, ES & NL

Voice over IP Security Book Review:

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.

Securing VoIP

Securing VoIP
Author: Regis J. Bates
Publsiher: Syngress Press
Total Pages: 207
Release: 2014-11-17
ISBN 10: 9780124170391
ISBN 13: 0124170390
Language: EN, FR, DE, ES & NL

Securing VoIP Book Review:

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.

How to Cheat at VoIP Security

How to Cheat at VoIP Security
Author: Thomas Porter, CISSP, CCNP, CCDA, CCS,Michael Gough
Publsiher: Syngress
Total Pages: 432
Release: 2011-04-18
ISBN 10: 9780080553535
ISBN 13: 0080553532
Language: EN, FR, DE, ES & NL

How to Cheat at VoIP Security Book Review:

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

VoIP Voice Over Internet Protocol Architecture and Features

VoIP  Voice Over Internet Protocol Architecture and Features
Author: Anonim
Publsiher: Lulu.com
Total Pages: 329
Release: 2021
ISBN 10: 1435731654
ISBN 13: 9781435731653
Language: EN, FR, DE, ES & NL

VoIP Voice Over Internet Protocol Architecture and Features Book Review:

Hacking VoIP

Hacking VoIP
Author: Himanshu Dwivedi
Publsiher: No Starch Press
Total Pages: 232
Release: 2009
ISBN 10: 1593271638
ISBN 13: 9781593271633
Language: EN, FR, DE, ES & NL

Hacking VoIP Book Review:

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.

Hacking Exposed Unified Communications VoIP Security Secrets Solutions Second Edition

Hacking Exposed Unified Communications   VoIP Security Secrets   Solutions  Second Edition
Author: Mark Collier,David Endler
Publsiher: McGraw Hill Professional
Total Pages: 560
Release: 2013-12-20
ISBN 10: 0071798773
ISBN 13: 9780071798778
Language: EN, FR, DE, ES & NL

Hacking Exposed Unified Communications VoIP Security Secrets Solutions Second Edition Book Review:

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

VoIP Security

VoIP Security
Author: James F. Ransome,John W. Rittinghouse
Publsiher: Digital Press
Total Pages: 402
Release: 2005
ISBN 10: 9781555583323
ISBN 13: 1555583326
Language: EN, FR, DE, ES & NL

VoIP Security Book Review:

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.

Taking Charge of Your VoIP Project

Taking Charge of Your VoIP Project
Author: John Q. Walker,Jeffrey T. Hicks
Publsiher: Cisco Press
Total Pages: 312
Release: 2004-02-23
ISBN 10: 9780132702911
ISBN 13: 0132702916
Language: EN, FR, DE, ES & NL

Taking Charge of Your VoIP Project Book Review:

Strategies and solutions for successful VoIP deployments Justify your network investment The step-by-step approach to VoIP deployment and management enables you to plan early and properly for successful VoIP integration with your existing systems, networks, and applications. The detailed introduction offers a common grounding for members of both the telephony and data networking communities. IT managers and project leaders are armed with details on building a business case for VoIP, including details of return-on-investment (ROI) analysis and justification. A VoIP deployment is presented as a major IT project, enabling you to understand the steps involved and the required resources. The comprehensive look at quality of service and tuning describes when and where to use them in a VoIP deployment. These are often the most complex topics in VoIP; you'll get smart recommendations on which techniques to use in various circumstances. You learn how to plan for VoIP security, including prevention, detection, and reaction. Voice over IP (VoIP) is the telephone system of the future. Problem is, VoIP is not yet widely deployed, so there are few skilled practitioners today. As you make your move to VoIP, how will you know how to make VoIP work and keep it working well? What changes will you need to make without disrupting your business? How can you show your return on this investment? Many books contain technical details about VoIP, but few explain in plain language how to make it run successfully in an enterprise. Taking Charge of Your VoIP Project provides the detailed plans you need to be successful in your organization's deployment of VoIP. Through their years of work in the field, authors John Q. Walker and Jeffrey T. Hicks bring a project-oriented approach to VoIP, with much-needed clarity on getting VoIP to work well. Taking Charge of Your VoIP Project starts with simple concepts, each chapter building on the knowledge from the last. Although not a technical manual, you learn about the standards, such as H.323, G.711, and Real-Time Transport Protocol (RTP), and the implications they have on your VoIP system. Most importantly, you'll gain expert advice and a systematic guide on how to make VoIP work for your organization. This volume is in the Network Business Series offered by Cisco Press. Books in this series provide IT executives, decision makers, and networking professionals with pertinent information on today's most important technologies and business strategies. 158720092903152004

Voice over Internet Protocol VoIP Security

Voice over Internet Protocol  VoIP  Security
Author: James F. Ransome, PhD, CISM, CISSP,John Rittinghouse, PhD, CISM
Publsiher: Elsevier
Total Pages: 432
Release: 2005-01-19
ISBN 10: 9780080470467
ISBN 13: 0080470467
Language: EN, FR, DE, ES & NL

Voice over Internet Protocol VoIP Security Book Review:

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.

VoIP Monthly Newletter December 2010

VoIP Monthly Newletter December 2010
Author: Anonim
Publsiher: Information Gatekeepers Inc
Total Pages: 329
Release: 2021
ISBN 10:
ISBN 13:
Language: EN, FR, DE, ES & NL

VoIP Monthly Newletter December 2010 Book Review:

Nortel Guide to VPN Routing for Security and VoIP

Nortel Guide to VPN Routing for Security and VoIP
Author: James Edwards,Richard Bramante,Al Martin
Publsiher: John Wiley & Sons
Total Pages: 734
Release: 2006-11-29
ISBN 10: 0470073004
ISBN 13: 9780470073001
Language: EN, FR, DE, ES & NL

Nortel Guide to VPN Routing for Security and VoIP Book Review:

Here's your handbook to Nortel VPN Router If you're a beginning-to-intermediate-level networking professional, this guide lays the groundwork you need to establish and manage your network with VPN Router. Everything is here-hardware, software, laboratory set-ups, real-world examples, and, most importantly, advice gleaned from the authors' first-hand experiences. From understanding the equipment to deployment strategies, management and administration, authentication, and security issues, you'll gain a working knowledge of VPN Router. You will explore tunneling protocols, VoIP, troubleshooting, and exercises to help you apply the Nortel VPN Router in your own environment. This book prepares you to handle the project and provides a resource for future reference. Manage the complexities of Nortel's VPN Router Review the newest networking standards Become acquainted with all the tools in the Nortel VPN Router portfolio, and apply them to your organization's needs Deploy a VPN Router in a Small Office or Home Office (SOHO) network or a large corporate network Learn to apply security features such as a stateful firewall, Network Address Translation (NAT), port forwarding, and user and Branch Office Tunnel (BOT) termination Establish security for VoIP and roaming wireless connections Explore the Nortel VPN Client software, supported platforms, installation and configuration information, and basic VPN Client concepts Maximize the effectiveness of your Nortel VPN Router solution

Information Systems Security

Information Systems Security
Author: Atul Prakash
Publsiher: Springer
Total Pages: 327
Release: 2009-11-16
ISBN 10: 3642107729
ISBN 13: 9783642107726
Language: EN, FR, DE, ES & NL

Information Systems Security Book Review:

The management of services and operations in today’s organizations are - coming increasingly dependent on their enterprise local area network (enterprise LAN). An enterprise LAN consists of a set of network zones (logical group of networkelements)correspondingto di?erent departments orsections,connected through various interface switches (typically, Layer-3 switches). The network service accesses between these zones and also with the external network (e. g. , Internet) are governed by a global network security policy of the organization. This global policy is de?ned as a collection of service access rules across various network zones where the services referred network applications conforming to TCP/IP protocol. For example, some of the known network services aressh, t- net,http etc. In reality, the security policy may be incompletely speci?ed; which explicitly states the “permit” and “deny” access rules between speci?c network zones keeping remaining service access paths as unspeci?ed. The global security policy is realized in the network by con?guring the n- work interfaces with appropriate sets of access control rules (ACLs). One of the major challenges in network security management is ensuring the conformation of the distributed security implementations with the global security policy.

VoIP Performance Management and Optimization

VoIP Performance Management and Optimization
Author: Adeel Ahmed,Habib Madani,Talal Siddiqui
Publsiher: Cisco Press
Total Pages: 448
Release: 2010-07-29
ISBN 10: 0132583062
ISBN 13: 9780132583060
Language: EN, FR, DE, ES & NL

VoIP Performance Management and Optimization Book Review:

VoIP Performance Management and Optimization A KPI-based approach to managing and optimizing VoIP networks IP Communications Adeel Ahmed, CCIE® No. 4574 Habib Madani Talal Siddiqui, CCIE No. 4280 VoIP Performance Management and Optimization is the first comprehensive, expert guide to managing, monitoring, troubleshooting, and optimizing large VoIP networks. Three leading Cisco VoIP experts bring together state-of-the-art techniques for ensuring that customer service level agreements (SLA) are consistently met or exceeded. The authors begin by reviewing how VoIP is deployed in enterprise and service provider networks and the performance tradeoffs and challenges associated with each leading VoIP deployment model. Next, they present a comprehensive approach to diagnosing problems in VoIP networks using key performance indicators (KPI) and proactively addressing issues before they impact service. In this book, you will find a proven tools-based strategy for gauging VoIP network health and maximizing performance and voice quality. You also will learn how to perform trend analysis and use the results for capacity planning and traffic engineering—thereby optimizing your networks for both the short- and long-term. The authors all work in the Cisco Advanced Services Group. Deploy, manage, monitor, and scale multivendor VoIP networks more effectively Integrate performance data from multiple VoIP network segments and service flows to effectively manage SLAs Use performance counters, call detail records, and call agent trace logs to gauge network health in real time Utilize dashboards to analyze and correlate VoIP metrics, analyze trends, and plan capacity Implement a layered approach to quickly isolate and troubleshoot both localized and systemic problems in VoIP networks Optimize performance in networks where the service provider owns the “last mile” connection Improve performance when VoIP is deployed over publicly shared infrastructure Manage performance in enterprise networks using both centralized and distributed call processing Plan media deployment for the best possible network performance Monitor trends, establish baselines, optimize existing resources, and identify emerging problems Understand and address common voice quality issues This IP communications book is part of the Cisco Press® Networking Technology Series. IP communications titles from Cisco Press help networking professionals understand voice and IP telephony technologies, plan and design converged networks, and implement network solutions for increased productivity. Category: Networking: Unified Communications Covers: Voice over IP Network Management

Security and Privacy in Communication Networks

Security and Privacy in Communication Networks
Author: Tanveer Zia,Albert Zomaya,Vijay Varadharajan,Morley Mao
Publsiher: Springer
Total Pages: 420
Release: 2013-12-17
ISBN 10: 3319042831
ISBN 13: 9783319042831
Language: EN, FR, DE, ES & NL

Security and Privacy in Communication Networks Book Review:

This book constitutes the thoroughly refereed post-conference proceedings of the 9th International ICST Conference on Security and Privacy in Communication Networks, held in Sydney, Australia, in September 2013. The 26 revised full papers presented were carefully reviewed and selected from 70 submissions. The papers are grouped in topical sections on: security and privacy in mobile, sensor and ad hoc networks; malware, botnets and distributed denial of service; security for emerging technologies: VoIP, peer-to-peer and cloud computing; encryption and key management; security in software and machine learning; network and system security model; security and privacy in pervasive and ubiquitous computing.

The Internet and Mobile Technology

The Internet and Mobile Technology
Author: Marvin V. Zelkowitz
Publsiher: Academic Press
Total Pages: 344
Release: 2011
ISBN 10: 0123855144
ISBN 13: 9780123855145
Language: EN, FR, DE, ES & NL

The Internet and Mobile Technology Book Review:

This series, since its first volume in 1960 and now the oldest series still being published, covers new developments in computer technology. Each volume contains from 5 to 7 chapters and 3 volumes are produced annually. Most chapters present an overview of a current subfield within computer science, include many citations, and often new developments in the field by the authors of the individual chapters. Topics include hardware, software, web technology, communications, theoretical underpinnings of computing, and novel applications of computers. The book series is a valuable addition to university courses that emphasize the topics under discussion in that particular volume as well as belonging on the bookshelf of industrial practitioners who need to implement many of the technologies that are described. In-depth surveys and tutorials on new computer technology Well-known authors and researchers in the field Extensive bibliographies with most chapters Many of the volumes are devoted to single themes or subfields of computer science

Understanding Voice Over IP Security

Understanding Voice Over IP Security
Author: Alan B. Johnston,David M. Piscitello
Publsiher: Artech House on Demand
Total Pages: 261
Release: 2006
ISBN 10:
ISBN 13: UOM:39015063323904
Language: EN, FR, DE, ES & NL

Understanding Voice Over IP Security Book Review:

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.

Voice over IP Security

Voice over IP Security
Author: Patrick Park
Publsiher: Pearson Education
Total Pages: 384
Release: 2008-09-09
ISBN 10: 1587058219
ISBN 13: 9781587058219
Language: EN, FR, DE, ES & NL

Voice over IP Security Book Review:

Voice over IP Security Security best practices derived from deep analysis of the latest VoIP network threats Patrick Park VoIP security issues are becoming increasingly serious because voice networks and services cannot be protected from recent intelligent attacks and fraud by traditional systems such as firewalls and NAT alone. After analyzing threats and recent patterns of attacks and fraud, consideration needs to be given to the redesign of secure VoIP architectures with advanced protocols and intelligent products, such as Session Border Controller (SBC). Another type of security issue is how to implement lawful interception within complicated service architectures according to government requirements. Voice over IP Security focuses on the analysis of current and future threats, the evaluation of security products, the methodologies of protection, and best practices for architecture design and service deployment. This book not only covers technology concepts and issues, but also provides detailed design solutions featuring current products and protocols so that you can deploy a secure VoIP service in the real world with confidence. Voice over IP Security gives you everything you need to understand the latest security threats and design solutions to protect your VoIP network from fraud and security incidents. Patrick Park has been working on product design, network architecture design, testing, and consulting for more than 10 years. Currently Patrick works for Cisco® as a VoIP test engineer focusing on security and interoperability testing of rich media collaboration gateways. Before Patrick joined Cisco, he worked for Covad Communications as a VoIP security engineer focusing on the design and deployment of secure network architectures and lawful interception (CALEA). Patrick graduated from the Pusan National University in South Korea, where he majored in computer engineering. Understand the current and emerging threats to VoIP networks Learn about the security profiles of VoIP protocols, including SIP, H.323, and MGCP Evaluate well-known cryptographic algorithms such as DES, 3DES, AES, RAS, digital signature (DSA), and hash function (MD5, SHA, HMAC) Analyze and simulate threats with negative testing tools Secure VoIP services with SIP and other supplementary protocols Eliminate security issues on the VoIP network border by deploying an SBC Configure enterprise devices, including firewalls, Cisco Unified Communications Manager, Cisco Unified Communications Manager Express, IP phones, and multilayer switches to secure VoIP network traffic Implement lawful interception into VoIP service environments This IP communications book is part of the Cisco Press® Networking Technology Series. IP communications titles from Cisco Press help networking professionals understand voice and IP telephony technologies, plan and design converged networks, and implement network solutions for increased productivity. Category: Networking–IP Communication Covers: VoIP Security