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: http://blog.vmpros.nl/2011/07/13/vmware-easy-upgrade-esxi-4-1-to-esxi-5-0/

A tcpdump Tutorial and Primer: http://danielmiessler.com/study/tcpdump/

Introduction to ARP Poisoning: http://www.oxid.it/downloads/apr-intro.swf

UFW - Uncomplicated Firewall: https://www.ubuntu.com/community/UFW"

VMWare - ESXi - Configuring the speed and duplex of a host network card: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004089"