Preparing yourself for intrusions

Wednesday, 26 January 2005, 8:02 AM EST

In years past, the term intrusion detection had a general meaning: the methods by which an administrator learned about system intrusions, or about attempts to intrude, on a given system. As in most technological areas, intrusion detection has evolved and specialized. Why worry about intrusion detection if you have a good firewall? Just remember: no lock is unpickable. Firewalls have holes so that services can run (web, mail, and so on). Where there's a hole, there's a way.

In this article, we explain the basic concepts of intrusion detection and response. We also show you how to use common Linux tools and shell scripts to maintain the security of your system, keep a watchful (and automated) eye on your system, and offer some solutions to common intrusion detection problems.

By Stanley at Linux Exposed.

[ Read more ]

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