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Intrusion Detection
We have thousands of posts on a wide variety of open source and security topics, conveniently organized for searching or just browsing.



Intrusion Detection Systems for the Uninitiated, Part 2; Installing and Configuring Snort  26 October 2001 
Source: linux.com - Posted by Dave Wreski   
Snort is a lightweight network-based intrusion detection system (called NIDS). NIDS is unlike 'portsentry', which is a host based IDS and capable of performing real-time traffic analysis and packet logging on IP networks. The reason Snort is called 'lightweight' NIDS, is . . .
 
Intrusion Detection Systems for the Uninitiated, Part 2; Installing and Configuring Snort  17 October 2001 
Source: Linux.com - Posted by Derrick Lewis   
Shashank Pandey returns to Linux.com with part two of his popular series on IDS: Intrusion detection Systems for Linux. Quizzing PortSentry in his last article, in today's Pandey cast a sharp eye over working with snort. And remember in some primitive . . .
 
How to tell if your Linux box has been cracked  16 October 2001 
Source: LinuxWorld.com - Posted by Benjamin D. Thomas   
Over the last two weeks, I've discussed how to prevent crackers from gaining access to your Linux computer (see 10 minutes to an iptables-based Linux firewall and How to stop crackers with PortSentry). This week, we continue the series with ways . . .
 
The Value of Honeypots, Part One: Definitions and Values of Honeypots  11 October 2001 
Source: Security Focus - Posted by Benjamin D. Thomas   
Over the past several years there has been a growing interest in honeypots and honeypot-related technologies. Honeypots are not a new technology, they were first explained in a couple of very good papers by several icons in computer security: Cliff Stoll's . . .
 
Buyer's Guide: Network-based intrusion-detection systems  11 October 2001 
Source: NW Fusion - Posted by Dave Wreski   
Product reviews, analysis, and NIDS testing and results. Good set of links for those interested in Linux and other solutions. "The future of intrusion detection is hybrids of network- and server-based products, faster speeds and improved event correlation and analysis. But . . .
 
Information Warfare: When Intrusion Detection Isn't Enough  05 October 2001 
Source: Help Net Security - Posted by Benjamin D. Thomas   
September 11, 2001... that date will be engraved upon the memories of most Americans for many years to come. That is the date when Terrorists brought their battle to the U.S. soil. One week later, the Internet came under attack by . . .
 
Nimda Snort Rules  20 September 2001 
Source: snort.org - Posted by Chris Pallack   
Everyone and their brother has put out an advisory on NIMDA, the latest worm to thrash IExplore, Outlook Express, and IIS. This worm does a number of cute things that are well documented in the SANS advisory available here.. . .
 
Wanted: Next-gen tech for weapons detection  17 September 2001 
Source: EE Times - Posted by Dave Wreski   
This is a really interesting article on the development of advanced techniques to detect ceramic knives and other weapons on a person. "The challenge for engineers responding to the FAA request is to develop a technology that can detect the presence of weapons under a person's clothing.. . .
 
Stealth encoding bypasses IDS protection  10 September 2001 
Source: TheRegister - Posted by Dave Wreski   
Cisco's Intrusion Detection System (IDS)is not the only technology that fails to protect ISS Web servers against stealth unicode attacks. An advisory by eEye Digital Security, reports that network and server sensors from ISS, Dragon Sensor 4.x, Snort (prior to version . . .
 
SC Mag: Remote Monitoring  04 September 2001 
Source: InfoSecurity Magazine - Posted by Jen Olson   
Why Outsource IDS Monitoring, Anyway? The simple answer to that, if there is one, is that organizations are caught between massive security requirements and miniscule security budgets. Outsourcing offers the benefits of economies of scale in that the . . .
 
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