The last in this four part series on IDS, looks at Logcheck: a software package that is designed to automatically run and check system log files for security violations and unusual activity. In the last three articles in this series, . . .
The last in this four part series on IDS, looks at Logcheck: a software package that is designed to automatically run and check system log files for security violations and unusual activity. In the last three articles in this series, we looked at the concept of an Intrusion Detection System (IDS) and its implementation on your network. We discussed some of the top-notch tools like Tripwire and Snort, that you could use as your Swiss army knife in detecting intrusions into your network. But position yourself in this scenario: you have a tough security framework in place scanning almost every packet that tries to get into your network, you even have some of the most sophisticated Intrusion Detection Systems implemented for your whole network. However, you erred on the permissions of your log files and never bother to monitor the logs until you have been hit very hard. Of course, the well known distributions, work in a way such that they have certain scripts running in cron, which from time to time, tars the logs and back them up, so file permissions aren't anything you should worry about. You should also make sure that no one apart from root, has write access to the logs.
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