Training & How-to's

A Free Lecture-based Educational Course that covers Binary Math, IP Addressing, Default Subnet Masks, ARP, and more.How to upgrade ESXi 4.1 to ESXi 5.0 
NOTE: Ensure you stop all VMs and have extra disk space in your datastore prior to the upgrade:

A tcpdump Tutorial and Primer:

Introduction to ARP Poisoning:

UFW - Uncomplicated Firewall:"

VMWare - ESXi - Configuring the speed and duplex of a host network card:"