We have recently released an update to the VI3 Security Hardening guide. The main changes are:
- new content for ESX 3.5 and VirtualCenter 2.5, including VirtualCenter plug-ins
- a section specific to hardening for ESXi.
- new sections for VM configuration as well as client software
- a greater level of depth for the existing recommendations
To keep things simple, the new version uses the same URL as the previous version:
As always, this and a lot of other security information for VMware products may be found at http://www.vmware.com/security.