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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.

Stopping Denial of Service Attacks  18 July 2001 
Source: Antioffline - Posted by Dave Wreski   
J. Oquendo writes, "Thought I'd post the following document in hopes anyone who is under attack can look to in order to minimize the effects of a Denial of Service attack. The article is not an RFC, merely a supplement for administrators to take immediate action during an attack.. . .
A rogue's gallery of DoS attacks  18 July 2001 
Source: ZDNet AU - Posted by Ryan W. Maple   
In 2001, even the creme de la creme of network security is vulnerable to denial of service attacks. ZDNet takes you through the latest lineup of DoS suspects. Are you protected against them? Tuesday, May 22, started out as just another . . .
Honeynet Project sweetens hacker bait  13 July 2001 
Source: ZDNet - Posted by Dave Wreski   
The Honeynet Project--a group of experts in computer security, information intelligence and psychology--unveiled Thursday its plans for improving "honeynets," collections of computers designed to let hackers break into a false network while allowing investigators to watch their every move.. . .
DDOS Attacks On The Rise - Efnet Latest Target  12 July 2001 
Source: Newsbytes - Posted by Dave Wreski   
Eris Free Network (Efnet), the free-to-use Internet Relay Chat (IRC) network, has been under fire from distributed denial of service (DDOS) attacks for the last 48 hours, resulting in most users being blocked from accessing the service. A report on . . .
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: - 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 . . .
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