A well written guide on how to upgrade Drupal using SSH commands

This guide is meant to augment the official Upgrade guide. Please read the official upgrade steps in UPGRADE.txt as well as in the Drupal.org Dcoumentation thoroughly to ensure that you understand every aspect of the upgrade process. This guide is for more advanced users with SSH experience.

This nifty little script allows you to monitor log files for instances of brute forcing as well as popular exploits that show up in your server logs files. Anyone that has many servers should check this out.

BFD (Brute Force Detector) Home Page

There is also a nice little write up of how to implement BFD without AFP and some extended rules.

BFD rules for Jag servers