 Programming Ruby: The Pragmatic Programmers' Guide, Second Edition Author: Dave Thomas Manufacturer: Pragmatic Bookshelf ListPrice: $44.95 Offer: $29.67
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 How to Break Web Software: Functional and Security Testing of Web Applications and Web Services. Book & CD Author: Mike Andrews Manufacturer: Addison-Wesley Professional ListPrice: $34.99 Offer: $23.09
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 Building Telephony Systems with Asterisk Author: D Gomillion Manufacturer: Packt Publishing ListPrice: $29.99 Offer: $26.99
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 Switching to VoIP Author: Ted Wallingford Manufacturer: O'Reilly Media, Inc. ListPrice: $39.95 Offer: $26.37
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 Extrusion Detection: Security Monitoring for Internal Intrusions Author: Richard Bejtlich Manufacturer: Addison-Wesley Professional ListPrice: $54.99 Offer: $34.64
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 VoIP For Dummies (For Dummies (Computer/Tech)) Author: Timothy V. Kelly Manufacturer: For Dummies ListPrice: $24.99 Offer: $16.49
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 CISSP All-in-One Exam Guide, Third Edition (All-in-One) Author: Shon Harris Manufacturer: McGraw-Hill Osborne Media ListPrice: $79.99 Offer: $51.12
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 Penetration Tester's Open Source Toolkit Author: Charl Van Der Walt Manufacturer: Syngress ListPrice: $59.95 Offer: $42.98
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 Counter Hack: A Step-by-Step Guide to Computer Attacks and Effective Defenses Author: Ed Skoudis Manufacturer: Prentice Hall PTR ListPrice: $54.99 Offer: $34.64
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 Hacking Exposed Wireless (Hacking Exposed) Author: Johnny Cache Manufacturer: McGraw-Hill Osborne Media ListPrice: $49.99 Offer: $31.49
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 Securing VoIP Networks: Threats, Vulnerabilities, and Countermeasures Author: Peter Thermos Manufacturer: Addison-Wesley Professional ListPrice: $44.99 Offer: $39.52
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 Internet Communications Using SIP Author: Henry Sinnreich Manufacturer: Wiley ListPrice: $75.00 Offer: $59.50
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 Wi-Foo: The Secrets of Wireless Hacking Author: Andrew Vladimirov Manufacturer: Addison-Wesley Professional ListPrice: $44.99 Offer: $31.94
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 Asterisk: The Future of Telephony Author: Jim Van Meggelen Manufacturer: O'Reilly Media, Inc. ListPrice: $39.95
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 Internet Communications Using SIP: Delivering VoIP and Multimedia Services with Session Initiation Protocol (Networking Council) Author: Henry Sinnreich Manufacturer: Wiley ListPrice: $80.00 Offer: $64.00
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 Voice over IP Fundamentals (2nd Edition) (Fundamentals) Author: Jonathan Davidson Manufacturer: Cisco Press ListPrice: $60.00 Offer: $51.05
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 The IMS: IP Multimedia Concepts and Services Author: Miikka Poikselka Manufacturer: Wiley ListPrice: $130.00 Offer: $104.00
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 Voice over IP Fundamentals Author: Jonathan Davidson Manufacturer: Cisco Press ListPrice: $50.00
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 PBX Systems for IP Telephony Author: Allan Sulkin Manufacturer: McGraw-Hill Professional ListPrice: $59.95 Offer: $43.16
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 Asterisk Hacking Author: Ben Jackson Manufacturer: Syngress ListPrice: $49.95 Offer: $48.95
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 Configuration Guide for Asterisk PBX Author: Flavio Goncalves Manufacturer: BookSurge Publishing ListPrice: $49.95 Offer: $49.95
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 Voice over Internet Protocol (VoIP) Security Author: PhD, CISM, CISSP, James F. Ransome Manufacturer: Digital Press ListPrice: $58.95 Offer: $57.77
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 RFID Security Author: Frank Thornton Manufacturer: Syngress ListPrice: $49.95 Offer: $48.95
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 SIP Beyond VoIP: The Next Step in the IP Communications Revolution Author: Henry Sinnreich Manufacturer: VON Publishing LLC
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 Understanding Voice over IP Security (Artech House Telecommunications Library) Author: Alan B. Johnston Manufacturer: Artech House Publishers ListPrice: $115.00 Offer: $115.00
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 Voice Over IPv6: Architectures for Next Generation VoIP Networks Author: Daniel Minoli Manufacturer: Newnes ListPrice: $65.95 Offer: $65.95
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 How to Cheat at Voip Security (How to Cheat) (How to Cheat) (How to Cheat) Author: Thomas Porter Manufacturer: Syngress ListPrice: $49.95 Offer: $44.96
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