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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.

Snort 1.6.2 Released  09 July 2000 
Source: - Posted by Dave Wreski   
Snort is a lightweight network intrusion detection system, capable of performing real-time traffic analysis and packet logging on IP networks. It can perform protocol analysis, content searching/matching and can be used to detect a variety of attacks . . .
The Motives and Psychology of the Black-hat Community  26 June 2000 
Source: SecurityFocus - Posted by Dave Wreski   
This paper is a continuation of the Know Your Enemy series. This series is dedicated to learning the tools and tactics of the black-hat community. Unlike the previous papers which focused purely on the "what" and "how" of the black-hat community, . . .
Knowing when someone is knocking on your door.  26 June 2000 
Source: Lance Spitzner - Posted by Benjamin D. Thomas   
Lance E. Spitzner tells us how you can protect yourself by detecting intrusion attempts and then covers what you can do about them. This article will discuss how you can protect yourself by detecting these intrusion attempts. I will then cover . . .
IPAudit: Monitor Network Activity  21 June 2000 
Source: Jon Rifkin - Posted by Benjamin D. Thomas   
Here is a tool recently released on Packetstorm. IPAUDIT listens to a network device in promiscuous mode, and records of every 'connection', each conversation between two ip addresses. A unique connection is determined by the ip addresses . . .
Network Intrusion Detection, An Analyst's Handbook  17 June 2000 
Source: - Posted by Benjamin D. Thomas   
Here is an interesting book review for "Network Intrusion Detection, An Analyst's Handbook" It gives chapter by chapter summaries throughout the book. "This book is far-and-away one of the more relevant and well-written books on security issues, and should be . . .
The Secrets of Snoop  15 June 2000 
Source: Lance Spitzner - Posted by Benjamin D. Thomas   
Lance writes, " Sniffers have exploded in popularity over the past several years, from Network Generals Netxray and Microsofts Network Monitor, to public domain tools such as Etherman and Curry Sniffer. These tools are used for various reasons, including network troubleshooting, . . .
Detecting Signs of Intrusion  14 June 2000 
Source: CERT - Posted by Chris Pallack   
Intruders are always looking for new ways to break into systems. They may attempt to breach your network's perimeter defenses from remote locations, or physically infiltrate your organization to gain direct access to its information resources. Intruders seek and take . . .
MimeStar Shoots Down Intruders  12 June 2000 
Source: LinuxMall - Posted by Dave Wreski   
Version 3.0.7 of MimeStar's SecureNet PRO Network Intrusion Detection and Monitoring suite has been unveiled, revealing an enterprise-scalable security platform with custom protocol decoding, real-time monitoring and unique intrusion response features.
Cracked! part 5: Rebuilding  12 June 2000 
Source: - Posted by Dave Wreski   
This is the fifth part of the story of a community network that was cracked and what was done to recover from it. By this point we have realized that we must get the cracker off of our machines before . . .
Who's Sniffing Your Network?  04 June 2000 
Source: - Posted by Team   
This article talks about a few of the sniffer tools that are available, and what can be done to detect their presence. "Sniffers represent a high level of risk because: they can capture passwords; they can capture confidential . . .
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