Most applications these days are at least somewhat network aware, but how do you protect those applications against common network security threats? Many developers are turning to OpenSSL, an open source version of SSL/TLS, which is the most widely used protocol for secure network communications.The OpenSSL library is seeing widespread adoption for web sites that require cryptographic functions to protect a broad range of sensitive information, such as credit card numbers and other financial transactions. The library is the only free, full-featured SSL implementation for C and C++, and it can be used programmatically or from the command line to secure most TCP-based network protocols.Network Security with OpenSSL enables developers to use this protocol much more effectively. Traditionally, getting something simple done in OpenSSL could easily take weeks. This concise book gives you the guidance you need to avoid pitfalls, while allowing you to take advantage of the library?s advanced features. And, instead of bogging you down in the technical details of how SSL works under the hood, this book provides only the information that is necessary to use OpenSSL safely and effectively. In step-by-step fashion, the book details the challenges in securing network communications, and shows you how to use OpenSSL tools to best meet those challenges.As a system or network administrator, you will benefit from the thorough treatment of the OpenSSL command-line interface, as well as from step-by-step directions for obtaining certificates and setting up your own certification authority. As a developer, you will further benefit from the in-depth discussions and examples of how to use OpenSSL in your own programs. Although OpenSSL is written in C, information on how to use OpenSSL with Perl, Python and PHP is also included.OpenSSL may well answer your need to protect sensitive data. If that?s the case, Network Security with OpenSSL is the only guide available on the subject.
Wireshark is the world's most popular network analyzer tool with over 1 million downloads per month. As the Founder of Wireshark University, Laura Chappell is undoubtedly one of the best Wireshark instructors around.
In this updated book, Laura offers step-by-step instructions on the key functions and features of Wireshark, including: Filter on addresses, protocols, fields or traffic characteristics Create custom columns for more efficient analysis Find the source of delays with filters and coloring rules Perform unattended captures with auto-stop conditions Filter on keywords using wildcards and regular expressions Graph and compare user, subnet and application traffic Reassemble and extract a file from captured traffic Identify DNS and HTTP errors fast Export important packet details to .csv format …and more
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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
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Master the Nmap Scripting Engine and the art of developing NSE scripts
About This BookExtend the capabilities of Nmap to perform custom tasks with the Nmap Scripting EngineLearn the fundamentals of Lua programmingDevelop powerful scripts for the Nmap Scripting EngineDiscover all the features and libraries of the Nmap Scripting EngineIn-depth coverage of the Nmap Scripting Engine API and most important libraries with examples
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This book will be a massive ally in troubleshooting your network using Wireshark, the world's most popular analyzer. Over 100 practical recipes provide a focus on real-life situations, helping you resolve your own individual issues.
Overview Place Wireshark in your network and configure it for effective network analysis Configure capture and display filters to get the required data Use Wireshark’s powerful statistical tools to analyze your network and its expert system to pinpoint network problems
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