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Linux Journal: Linux's Tell-Tale Heart, Part 4

Aug 11, 2000, 00:29 (0 Talkback[s])
(Other stories by Marcel Gagné)

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"Trimming Monster Logs and Advanced Cracker Detection."

"Yes, it's time for another installment of the SysAdmin's Corner, home of all things Linux. Okay, not all things, just those that are in some way technical and in some way related to running, maintaining and otherwise administering your Linux system. (That still sounds like a fair bit.) Today, we dive once more into the heart and soul of your Linux system to find out just what the heck it is trying to tell us. Yes, this is the wonderful world of logs and log files...."

"If you are running a web server, you might have noticed that your logs can be a bit busy. Every time someone requests a page, you get at least one entry in your web server's log files. Why "at least" one, rather than only one? In all likelihood, your pages aren't simple text documents. You may have a half-dozen graphics and a web counter in addition to the actual text. Each and every one of those will generate a log entry. Perhaps your web page is designed using frames - even more log entries."

"Before you can examine this wealth of information, you need to know where to look. For a Red Hat RPM installation, take a look in /etc/httpd/logs. If, like myself, you built your own Apache server from source, then you should probably be looking in your /usr/local/apache/logs directory. Either way, the file to look at iis access_log...."

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