You may or many not have read my Post back in January about the VMware vSphere 4.0 Security Hardening Guide Draft. Well the guide has now been released fully for you to download and review against your Virtual Infrastructure

Overall, there are more than 100 guidelines, with the following major sections:

• Introduction
• Virtual Machines
• Host (both ESXi and ESX)
• vNetwork
• vCenter
• Console OS (for ESX only)

The Guide can be downloaded here: http://communities.vmware.com/docs/DOC-12306

Source

• http://blogs.vmware.com/security/2010/04/vsphere-40-hardening-guide-released.html