http://www.vickysguide.com Linux server administration tips and tricks Thu, 17 Jul 2008 23:22:26 +0000 http://backend.userland.com/rss092 en Michael Boelen, the author of RKHUNTER rootkit checker has made another nice auditing tool - Lynis. It works on many Linux/Debian/MacOS/BSD systems and provides you the admin important information about system configuration and security issues. Update: On 16th July 2008 there was version 1.1.8 released. I updated this how-to. The installation is very ... http://www.vickysguide.com/lynis-security-and-system-auditing-tool/ I always want to know when root logs in to my server. It is a security measure I cope with in my mailbox deleting mails after I logged in as well.  Here is a little help for you all to receive mail when root logs in via ssh. edit file .bash_profile  ... http://www.vickysguide.com/root-login-notification/ In case your Python is giving your problems on EnsimX server and you get  "500 Internal error" errors then thig guide can help you. I found it on ensim forums and it helped me so I saved it for future reference. Here is the error message: 500 Internal error Internal Server Error -------------------------------------------------------------------------------- Hints ... http://www.vickysguide.com/python-problem-in-ensimx/ Rkhunter is an intrustion detection program for Linux OS which has been widely used by many server administrators. Sometimes there is a false alarm but most of the time you need to check the problematic areas Rkhunter points out. NEW: Rkhunter v.1.3.2. is available and this how-to is updated. Use these ... http://www.vickysguide.com/rkhunter-installation/ After upgrading to EnsimX 10.3.0 or in clean  EnsimX 10.3.0 installation there is issue having high MailScanner load. Take a look at this knowledge base article  for a solution.  You just download files that belong to your OS and then run rpm -Uvh *.rpm sh upgrade.sh http://www.vickysguide.com/high-mailscanner-load-in-ensimx-1030/ Despite all efforts EnsimX Pro was still using old www.snakeoil.com certificate instead the one I generated/bought for use for apache ssl. I tried various ways how to fix this but epld service was refusing to start or the snakeoil certificate returned back after a few days. Here is solution that fixes ... http://www.vickysguide.com/ensimx-pro-does-not-load-new-ssl-certificate/ I always wanted to see mail stats on my server, who receives and sends the most mails, what are the busiest hours, etc.. to better track mail problems, catch spammers and to satisfy my admin's ego ;-) . I found this little script that goes through senmail's log and produces ... http://www.vickysguide.com/daily-sendmail-stats-on-linux-server/ I have been noticing a very annoying delay when trying to log in via FTP on servers where I use proftpd. Everything works, but when I try to connect, 5 - 10 seconds pass by before I'm prompted for my login credentials. After long hour of searching on the internet I found ... http://www.vickysguide.com/remove-ftp-login-delay-with-proftpd/ During the time Ensim evolved it used to call its servrice either 'webppliance' or 'epld' (newer). So the command you need to run as root via shell to restart Ensim is: If you use version older than 10.x.x  # service webppliance restart   If you use version EnsimX for Linux 10.x and higher # service ... http://www.vickysguide.com/how-to-restart-ensim-from-shell/ This tutorial section deals with mysqldump which is a tool to import and export MySQL databases. It can be used to back up a database or to move database information from one server to another. 1. Export A MySQL Database This example shows you how to export a database. It is a good ... http://www.vickysguide.com/import-and-export-mysql-database/