Today I was preparing a new blade chassis in an existing vCenter environment. After applying the predefined Critical Host Patches baseline (default task for new hosts), the hosts would not reconnect to vCenter.
Turns out VMware decided to disable SSLv3 for ESXi 5.5 Update 3b and higher, because of the POODLE vulnerability. The dependency is clearly stated in the release notes and in the VMware Product Interoperability Matrix below. (more…)