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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.



Survey of Log Analysis Tools for Snort  12 July 2001 
Source: Unix Review - Posted by Pete O'Hara   
Snort is a lightweight network intrusion detection system capable of logging every possible trace of intrusion attempts into a text file, syslog, XML, libpcap format, or a database. This article introduces current tools that can help systems administrators analyze different log formats generated by Snort. This is not a complete analysis of all possible tools available for Snort. Because Snort is a robust freeware program, new tools are continuously developed and updated by users from around the globe. . . .
 
PoizonBOx hacks past security firm's 'honey pot'  11 July 2001 
Source: The Register - Posted by Pete O'Hara   
New Zealand security firm Co-Logic has become one of the latest victims of prolific hacking group PoizonBOx. In order to monitor hacker activity the security assessment firm had set up a "honey pot" server, a poorly protected section of its Web infrastructure that contained no real data and was designed purely to log the activity of crackers. . . .
 
Building an In-Depth Defense  11 July 2001 
Source: Network Computing - Posted by Dave Wreski   
Enabling access to critical applications and data while maintaining the confidentiality, integrity and availability of these resources can be a daunting task. One of the first steps to completing it is to use network segmentation and access-control methodologies. . . .
 
Trojan Ports List  11 July 2001 
Source: Neohapsis - Posted by Dave Wreski   
The guys at Neohapsis have put together a list of ports on which trojans run. Greg Shipley writes, "One of our guys (Mike Janowski) put together a pretty comprehensive list of common UDP/TCP port numbers, including many common apps, and some not-so-common ones (i.e. video games, trojans, etc.). . .
 
Snort FAQ Updated  10 July 2001 
Posted by Dave Wreski   
Hot on the heels of the Snort-1.8 release, Dragos Ruiu has updated his FAQ for the snort network intrusion detection system. Be sure to see our Network Intrusion Detection Using Snort feature story covering installing, configuring and using snort on your network.. . .
 
Snort Version 1.8 Release  10 July 2001 
Source: snort.org - Posted by Ryan W. Maple   
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 . . .
 
Getting started in computer forensics  10 July 2001 
Source: Computer World - Posted by Dave Wreski   
Many private companies are turning to the military and law enforcement agencies to find computer forensics and security professionals. Some officers are leaving their posts for jobs in the corporate world, sometimes doubling or even tripling their salaries. That's what Jose . . .
 
Intrusion Detection Systems Terminology, Part One: A - H  05 July 2001 
Source: Security Focus - Posted by Benjamin D. Thomas   
Intrusion Detection Systems (IDS) are still very much in their infancy, but in terms of development they are growing at an extraordinary rate. The terminology associated with IDS is also growing at rapidly. This article is intended to introduce readers to . . .
 
How to stop a service denial attack before it stops you  04 July 2001 
Source: GCN - Posted by Dave Wreski   
It's not easy to defend a federal Web server against distributed service denial attacks, but it?s not impossible either. For years now, the government has been under the gun in an undeclared cyberwar with hackers around the globe. The simplest and . . .
 
Stemming the DoS flood  02 July 2001 
Source: ZDNet - Posted by Pete O'Hara   
One the most aggravating Internet security threats today is a distributed denial-of-service attack--a flood of bogus network traffic that can effectively shut down a Web site. Far from going away, the phenomenon is evolving in different permutations. But new tools are . . .
 
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