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  The Rootkit Hunter script efficiently checks for malware, with the potential to detect over 240 rootkits.

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• Five lean tools for monitoring logfiles

  Anyone wanting to monitor logfiles could use one of the big dogs like Nagios or Icinga. However, lightweight alternatives can also sniff out threats and take much less time to set up. We put five of these little guard dogs to the test.

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• Monitoring Logfiles

  Logfiles contain records of what happens on a Linux system and the services it runs. Tools like Logcheck and Logsurfer filter out the most important events for the administrator, and they can even trigger an appropriate reaction automatically.

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• Kernel Rootkits

  Rootkits allow attackers to take complete control of a computer. We describe the tricks intruders use to gain access to the Linux kernel and provide guidelines on hardening the kernel against such attacks.

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• Expert Security Intro

  Internet intruders have many ingenious ways of escalating privileges and hiding their presence once they get inside your system. The best protection is to keep them out in the cold.

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