Network Security Monitoring with Arpwatch

Arpwatch is an amazingly useful tool that promiscuously listens on a specified interface for arp broadcasts.  It takes what it learns and saves the the output in a database for later reference in the following format. mac_address ip unix_date/time hostname It will take any changes/additions and log them to /var/log/messages as well as optionally emailing […]

Creating an HPC/Beowulf Cluster the Easy Way.

This cluster was created for Dr. Shin Han Shiu for use decoding plant genomes and other bioinformatics related tasks. Software: It runs the Rocks clustering distribution that is based on CentOS (which is based on RedHat Enterprise Linux) and is pretty much a cluster on a disk. It contains ganglia for monitoring, MPI and Sun […]