Ok, to update my previous post.
It seems as though Sourcefire has a Virtual Appliance (OVA) that gets installed in vSphere. This 3D Virtual Censor acts as a firewall component for the virtual machines. All the 3D Censors gets managed by a Defense Center.
So is it simply an appliance and nothing more? There must be some hypervisor component that communicates with the vSwitches in the same way vShield does. Does it leverage a VMsafe-ish API?
To note I'm not just being lazy. There are no whitepapers on the Sourcefire website and I have searched the internet for more information only to find a very high level overview of what it does(which I noted above). Not to mention their "datasheet" only says it supports up to ESX 4.0.
So any info would be great.
Thanks again
Joe