Hardware Health Port & Permissions?

Question

Is there any documentation regarding which ports and/or access is used to get the Hardware Health data?

Also, what permissions are required?

I have several ESXi Hosts that I am unable to get Hardware Health information on, in some cases using a root account made things work where a read-only account would not.

aLTeReGo · Accepted Answer

The CIM protocol uses TCP Port 5989 as outlined in the Administrators Guide below. By default only members of the "root" user group have access to query CIM.

http://www.solarwinds.com/NetPerfMon/SolarWinds/SAMESXHWTroubleshooting.htm

Fun with ESX and CIM permissions - http://www.virtuallyghetto.com/2011/05/cim-monitoring-caveat-with-esxi.html