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The Tao of Network Security Monitoring: Beyond Intrusion Detection


The Tao of Network Security Monitoring is one of the most comprehensive and up-to-date sources available on the subject. It gives an excellent introduction to information security and the importance of network security monitoring, offers hands-on examples of almost 30 open source network security tools, and includes information relevant to security managers through case studies, best practices, and recommendations on how to establish training programs for network security staff.

Linux Netwosix One Year Later


This brief article outlines the history and story behind Linux Netwosix, a security-focused distribution that is still in early stages of development. Vincenzo Ciaglia, its Italian founder, gives the Linux community an update on how the project has progressed after 11 months.

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State of Linux Security 2004


In 2004, security continued to be a major concern. The beginning of the year was plagued with several kernel flaws and Linux vendor advisories continue to be released at an ever-increasing rate. This year, we have seen the reports touting Window's security superiority, only to be debunked by other security experts immediately after release. Also, Guardian Digital launched the new, users continue to be targeted by automated attacks, and the need for security awareness and education continues to rise.

Users Respond with Constructive Feedback


    When the new version of was launched on December 1st, we also asked our readers to "Tell us what you think." You have spoken, and we appreciate that! We received hundreds of comments & requests, and have been addressing a majority of them. We thought it was important to share some of the comments with you. While some were purely positive acknowledgements, others were thoughtful criticisms. We take every critique into account and address each as resources become available or when the criticism becomes the concern of many.

Open Letter to the Linux Security Community


Welcome to the new! I must admit, I am really proud of what we have been able to accomplish over the years. has grown from a small idea that a couple of security geeks had in 1999, to a major and well respected Linux resource. With an all new look & feel, organizational changes, security events, and additions to our staff, we hope to better serve the Linux and open source community. Although there are many aesthetic improvements, a major part of our development has focused on creating a content structure and backend system that is easy to update.



Network security is continuing to be a big problem for companies and home users. The problem can be resolved with an accurate security analysis. In this article I show how to approach security using aide and chkrootkit.

Mass deploying Osiris


Osiris is a centralized file-integrity program that uses a client/server architecture to check for changes on a system. A central server maintains the file-integrity database and configuration for a client and at a specified time, sends the configuration file over to the client, runs a scan and sends the results back to the server to compare any changes. Those changes are then sent via email, if configured, to a system admin or group of people. The communication is all done over an encrypted communication channel.

Linux and National Security


As the open source industry grows and becomes more widely accepted, the use of Linux as a secure operating system is becoming a prominent choice among corporations, educational institutions and government sectors. With national security concerns at an all time high, the question remains: Is Linux secure enough to successfully operate the government and military's most critical IT applications?

An Interview with Gary McGraw, Co-author of Exploiting Software: How to Break Code


Gary McGraw is perhaps best known for his groundbreaking work on securing software, having co-authored the classic Building Secure Software (Addison-Wesley, 2002). More recently, he has co-written with Greg Hoglund a companion volume, Exploiting Software, which details software security from the vantage point of the other side, the attacker. He has graciously agreed to share some of his insights with all of us at