Via SANS ISC -
VMware announces the first draft of it's vSphere Hardening Guide, posted for public comment. A worthy successor to the current VMware Hardening Guide, it contains over 100 guidelines, split into the following sections:
* Virtual Machines
* Console OS (for ESX)
Aside from the versioning difference, this newer version of the guide uses a standardized format, and has severity levels for each security recommendation. The Hardening Guide can certainly be used as-is for production environments today, but we can expect changes over the next while in response to comments to the posted draft. While reviewing the draft, you'll see that most guidelines are worded to be "script friendly", which is very nice to see.
The announcement can be found here ==> http://blogs.vmware.com/security/2010/01/announcing-vsphere-40-hardening-guide-public-draft-release.html
The actual hardening guides can be found here ==> http://communities.vmware.com/community/vmtn/general/security?view=documents
Again, each document has a comments form, the authors are actively seeking constructive comments on these documents before going to a final version.