HostedDB - Dedicated UNIX Servers

Securing-Optimizing-RH-Linux-1_2_160
Comments and suggestions concerning this book should be mailed to gmourani@videotron.ca © Copyright 1999-2000 Gerhard Mourani and Open Network Architecture ® 160 Configurations Configure the “/usr/bin/logcheck.sh” script file Since we are using an alternate path for the files (i.e NOT in /usr/local/etc), we need to change the path entries for “logcheck.hacking”, “logcheck.violations”, “logcheck.ignore”, “logcheck.violations.ignore”, and “logtail” in the main logcheck.sh script. The script file for Logcheck “/usr/bin/logcheck.sh” allows you to set these options that modify the path entries and operation of the program. It is well commented and very basic. Step 1 Edit the logcheck.sh file (vi /usr/bin/logcheck.sh) and change the following: LOGTAIL=/usr/local/bin/logtail To read: LOGTAIL=/usr/bin/logtail TMPDIR=/usr/local/etc/tmp To read: TMPDIR=/etc/logcheck/tmp HACKING_FILE=/usr/local/etc/logcheck.hacking To read: HACKING_FILE=/etc/logcheck/logcheck.hacking VIOLATIONS_FILE=/usr/local/etc/logcheck.violations To read: VIOLATIONS_FILE=/etc/logcheck/logcheck.violations VIOLATIONS_IGNORE_FILE=/usr/local/etc/logcheck.violations.ignore To read: VIOLATIONS_IGNORE_FILE=/etc/logcheck/logcheck.violations.ignore IGNORE_FILE=/usr/local/etc/logcheck.ignore To read: IGNORE_FILE=/etc/logcheck/logcheck.ignore Step 2 Place an entry into root's crontabs to make Logcheck run as a cronjob: After installing Logcheck, you should edit your local crontab file for root and set Logcheck to run once per hour (recommended, although you can do it more frequently, or less frequently). To add Logcheck in your cronjob you must edit the crontab and add the following line: · To edit the crontab, use the command (as root): [root@deep /]# crontab -e # Hourly check Log files for security violations and unusual activity. 00 * * * * /usr/bin/logcheck.sh NOTE: Remember, Logcheck does not report anything via email if it has nothing useful to say. Installed files > /etc/logcheck > /etc/logcheck/tmp > /usr/bin/logcheck.sh > /usr/bin/logtail