You perform procedures on the vCenter Server in all your workload domains using different interfaces: PowerCLI and vSphere Client. Procedure Security Best Practices for Securing vCenter ServerYou must follow multiple best practices at all times when you operate your vCenter Server instances. Configure Security Settings for vCenter Server from the vSphere ClientYou perform the procedure on all vCenter Server instances to configure password policies, lockout policies, alarms, proxy, login banners, LDAP, and other configurations. Configure Security Settings for vCenter Server by Using PowerCLITo configure host password length, native VLAN, reserved VLAN, and VGT, you perform the procedure on all vCenter Servers instances. Configure Security Settings on the vCenter Server ApplianceYou configure a syslog server and configure backups for vCenter Server from the vCenter Server Appliance Management Interface.