Hacking VoIP: Protocols, Attacks, and Countermeasures

Overview

Voice over Internet Protocol (VoIP) networks have freed users from the tyranny of big telecom, allowing people to make phone calls over the Internet at very low or no cost. But while VoIP is easy and cheap, it's notoriously lacking in security. With minimal effort, hackers can eavesdrop on conversations, disrupt phone calls, change caller IDs, insert unwanted audio into existing phone calls, and access sensitive information.

Hacking VoIP takes a dual approach to VoIP security, ...

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Hacking VoIP: Protocols, Attacks, and Countermeasures

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Overview

Voice over Internet Protocol (VoIP) networks have freed users from the tyranny of big telecom, allowing people to make phone calls over the Internet at very low or no cost. But while VoIP is easy and cheap, it's notoriously lacking in security. With minimal effort, hackers can eavesdrop on conversations, disrupt phone calls, change caller IDs, insert unwanted audio into existing phone calls, and access sensitive information.

Hacking VoIP takes a dual approach to VoIP security, explaining its many security holes to hackers and administrators. If you're serious about security, and you either use or administer VoIP, you should know where VoIP's biggest weaknesses lie and how to shore up your security. And if your intellectual curiosity is leading you to explore the boundaries of VoIP, Hacking VoIP is your map and guidebook.

Hacking VoIP will introduce you to every aspect of VoIP security, both in home and enterprise implementations. You'll learn about popular security assessment tools, the inherent vulnerabilities of common hardware and software packages, and how to:

  • Identify and defend against VoIP security attacks such as eavesdropping, audio injection, caller ID spoofing, and VoIP phishing
  • Audit VoIP network security
  • Assess the security of enterprise-level VoIP networks such as Cisco, Avaya, and Asterisk, and home VoIP solutions like Yahoo! and Vonage
  • Use common VoIP protocols like H.323, SIP, and RTP as well as unique protocols like IAX
  • Identify the many vulnerabilities in any VoIP network

Whether you're setting up and defending your VoIP network against attacks or just having sick fun testing the limits of VoIP networks, Hacking VoIP is your go-to source for every aspect of VoIP security and defense.

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Product Details

  • ISBN-13: 9781593271633
  • Publisher: No Starch Press San Francisco, CA
  • Publication date: 10/28/2008
  • Pages: 220
  • Product dimensions: 6.90 (w) x 9.10 (h) x 0.80 (d)

Meet the Author

Himanshu Dwivedi is a leading security expert and researcher. He has published four books, Hacking Exposed: Web 2.0 (McGraw-Hill), Securing Storage (Addison Wesley), Hacker's Challenge 3 (McGraw-Hill), and Implementing SSH (Wiley). A founder of iSEC Partners, Himanshu manages iSEC's product development and engineering, specialized security solutions, and the creation of security testing tools for customers.

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Table of Contents

DEDICATION;
ACKNOWLEDGMENTS;
INTRODUCTION;
Book Overview;
Lab Setup;
Chapter 1: AN INTRODUCTION TO VOIP SECURITY;
1.1 Why VoIP;
1.2 VoIP Basics;
1.3 VoIP Security Basics;
1.4 Attack Vectors;
1.5 Summary;
Part I: VOIP PROTOCOLS;
Chapter 2: SIGNALING: SIP SECURITY;
2.1 SIP Basics;
2.2 SIP Messages;
2.3 Making a VoIP Call with SIP Methods;
2.4 Enumeration and Registration;
2.5 SIP Security Attacks;
2.6 Summary;
Chapter 3: SIGNALING: H.323 SECURITY;
3.1 H.323 Security Basics;
3.2 H.323 Security Attacks;
3.3 Summary;
Chapter 4: MEDIA: RTP SECURITY;
4.1 RTP Basics;
4.2 RTP Security Attacks;
4.3 Summary;
Chapter 5: SIGNALING AND MEDIA: IAX SECURITY;
5.1 IAX Authentication;
5.2 IAX Security Attacks;
5.3 Summary;
Part II: VOIP SECURITY THREATS;
Chapter 6: ATTACKING VOIP INFRASTRUCTURE;
6.1 Vendor-Specific VoIP Sniffing;
6.2 Hard Phones;
6.3 Cisco CallManager and Avaya Call Center;
6.4 Modular Messaging Voicemail System;
6.5 Infrastructure Server Impersonation;
6.6 Summary;
Chapter 7: UNCONVENTIONAL VOIP SECURITY THREATS;
7.1 VoIP Phishing;
7.2 Making Free Calls;
7.3 Caller ID Spoofing;
7.4 Anonymous Eavesdropping and Call Redirection;
7.5 Spam Over Internet Telephony;
7.6 Summary;
Chapter 8: HOME VOIP SOLUTIONS;
8.1 Commercial VoIP Solutions;
8.2 PC-Based VoIP Solutions;
8.3 SOHO Phone Solutions;
8.4 Summary;
Part III: ASSESS AND SECURE VOIP;
Chapter 9: SECURING VOIP;
9.1 SIP over SSL/TLS;
9.2 Secure RTP;
9.3 ZRTP and Zfone;
9.4 Firewalls and Session Border Controllers;
9.5 Summary;
Chapter 10: AUDITING VOIP FOR SECURITY BEST PRACTICES;
10.1 VoIP Security Audit Program;
10.2 Summary;
COLOPHON;

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