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Authors Carl Endorf, Eugene Schultz, and Jim Mellander deliver the hands-on implementation techniques that IT professionals need. Learn to implement the top intrusion detection products into real-world networked environments and covers the most popular intrusion detection tools including Internet Security Systems' Black ICE & RealSecure, Cisco Systems' Secure IDS, Computer Associates’ eTrust, Entercept, and the open source Snort tool.

Authors Carl Endorf, Eugene Schultz, and Jim Mellander deliver the hands-on implementation techniques that IT professionals need. Learn to implement the top intrusion detection products into real-world networked environments and covers the most popular intrusion detection tools including Internet Security Systems' Black ICE & RealSecure, Cisco Systems' Secure IDS, Computer Associates’ eTrust, Entercept, and the open source Snort tool.

This all new book covering the brand new Snort version 2.6 from members of the Snort developers team.The book will begin with a discussion of packet inspection and the progression from intrusion detection to intrusion prevention. The authors provide examples of packet inspection methods including: protocol standards compliance, protocol anomaly detection, application control, and signature matching. In addition, application-level vulnerabilities including Binary Code in HTTP headers, HTTP/HTTPS Tunneling, URL Directory Traversal, Cross-Site Scripting, and SQL Injection will also be analyzed. Next, a brief chapter on installing and configuring Snort will highlight various methods for fine tuning your installation to optimize Snort performance including hardware/OS selection, finding and eliminating bottlenecks, and benchmarking and testing your deployment. A special chapter also details how to use Barnyard to improve the overall performance of Snort. Next, best practices will be presented allowing readers to enhance the performance of Snort for even the largest and most complex networks. The next chapter reveals the inner workings of Snort by analyzing the source code. The next several chapters will detail how to write, modify, and fine-tune basic to advanced rules and pre-processors.The last part of the book contains several chapters on active response, intrusion prevention, and using Snort's most advanced capabilities for everything from forensics and incident handling to building and analyzing honey pots.

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With the B+W 43mm Basic 486M MRC UV/IR Cut Filter, photographers can effectively combat the intrusion of unwanted UV and infrared light components that can compromise image quality. This high-quality filter is engineered with a sharp cut-off absorption mechanism, ensuring the prevention of color casts and blurring, particularly crucial for digital cameras where the IR barrier in front of the image sensor may exhibit residual transmittance.Unlike conventional filters, the 43mm Basic 486M MRC UV/IR Cut Filter achieves this not through absorption via colored glass, but through an innovative interference method. This involves a series of wafer-thin, partially reflecting layers, each with a precisely calculated thickness, designed to filter out the unwanted light spectrum.The B+W 43mm Basic 486M MRC UV/IR Cut Filter is clear and colorless, ensuring no need for exposure adjustment. Its durable construction allows it to be left on the lens permanently, serving as a reliable protection filter. Enhanced with MRC coating, this filter offers improved light transmission and reduced reflections.Ideal for lenses with an aperture angle up to 60 degrees, the B+W 43mm Basic 486M MRC UV/IR Cut Filter operates on the principle of interference filter, which results in an aperture angle-dependent color influence. As the angle of the incident light increases, it drifts towards blue, ensuring that for wide-angle lenses with an aperture angle larger than 60 degrees, the color reproduction at the image edge maintains a subtle bluish tint. This innovative filter is a valuable tool for photographers seeking to enhance color accuracy and image clarity.

Nessus, Snort, and Ethereal Power Tools covers customizing Snort to perform intrusion detection and prevention; Nessus to analyze the network layer for vulnerabilities; and Ethereal to sniff their network for malicious or unusual traffic. The book contains an appendix detailing the best of the rest open source security tools. Each of these tools is intentionally designed to be highly customizable so that users can torque the programs to suit their particular needs. Users can code their own custom rules, plug-ins, and filters that are tailor-made to fit their own networks and the threats which they most commonly face. The book describes the most important concepts of coding and customizing tools, and then provides readers with invaluable working scripts that can either be used as is or further refined by using knowledge gained from the book.Snort, Nessus, and Ethereal are the three most popular open source security tools in the worldOnly book that teaches readers how to customize these tools for their specific needs by coding rules, plugins, and filtersCompanion Web site provides all working code and scripts from the book for download

Flip-top gas fill with integral tank vent for O.E.M. use. Features include; Hinged flip-top cap, integral tank vent with flame arrestor and continuous venting while providing effective prevention of water intrusion. All plastic construction.