Having the following error trying to apply IP restriction in the ESXi firewall using the vSphere client?
Call “HostFirewallSystem.UpdateRuleset” for object “firewallSystem” on ESXi “0.0.0.0” failed. Operation failed, diagnostics report: Sysinfo error on operation returned status : Already exists. Please see the VMkernel log for detailed error information
This behaviour can happen under the following conditions :
– You have specified /32 prefix for single IP(s)
– You have one or multiple subnets or IPs specified more than once in the allowed IP field
The syntax should be as the following example :
192.168.1.10, 172.16.0.0/26, 10.10.1.0/24