Bot_Attack An insidious spam botnet attacks Charly

Jul 31, 2006

While going about his normal duties, Linux Magazine author Charly Kühnast was hit with a mean attack. Charly’s separate anti-spam server, which sits in front of his mail server, saved him from the mail storm.

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How to Write a Rootkit Rootkits for the Linux kernel 2.6

Jul 31, 2006

Today’s rootkits infiltrate a target system at kernel level, thus escaping unwanted attention from administrators. Read on for a practical look at how a kernel rootkit really works.

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Charly's Column The Sysadmin’s Daily Grind: Policyd

Jun 30, 2006

The Postfix Policyd plugin fights spam using techniques such as greylisting, source detection, volume measurements, blacklisting, and HELO rotation detection.

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Sendmail Strategies Fighting spam and viruses with Sendmail

Jun 30, 2006

A structured approach to Sendmail helps to maximize your spam and virus protection.

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Books

Jun 30, 2006
Internet Forensics Spring Into Linux Time Management for System Administrators ...
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Antsp2p Anonymous Filesharing with Antsp2p

May 31, 2006

Filesharing is a favorite leisure activity for many Internet users. But conventional filesharing tools have one major drawback – they aren’t anonymous. The Antsp2p project aims to change this.

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Books

May 31, 2006
Computer Security, Second Edition White Collar Slackers Handbook...
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Charly's Column The Sysadmin’s Daily Grind: Nmap 4

Apr 30, 2006

Many tools keep growing with each new version, but Nmap 4.00 has lost weight thanks to the Diet-Nmap project. The latest incarnation of Nmap is not only quicker, it is also more frugal with memory.

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