For systems using DNS resolution, at least two name servers must be configured.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
GEN001375-ESXI5-000086	GEN001375-ESXI5-000086	GEN001375-ESXI5-000086_rule		Low

Description
To provide availability for name resolution services, multiple redundant name servers are mandated. A failure in name resolution could lead to the failure of security functions requiring name resolution, which may include time synchronization, centralized authentication, and remote system logging.

STIG	Date
VMware ESXi v5 Security Technical Implementation Guide	2013-01-15

Details

Check Text ( C-GEN001375-ESXI5-000086_chk )

Temporarily disable Lockdown Mode and enable the ESXi Shell via the vSphere Client. Open the vSphere/VMware Infrastructure (VI) Client and log in with appropriate credentials. If connecting to vCenter Server, click on the desired host. Click the Configuration tab and view the listed DNS server setting(s). If DNS is not configured and is not used, this is not a finding. If DNS is configured with less than 2 servers, this is a finding. Re-enable Lockdown Mode on the host.

Fix Text (F-GEN001375-ESXI5-000086_fix)

Temporarily disable Lockdown Mode and enable the ESXi Shell via the vSphere Client. Open the vSphere/VMware Infrastructure (VI) Client and log in with appropriate credentials. If connecting to vCenter Server, click on the desired host. Click the Configuration tab and view the listed DNS server setting(s). If DNS is configured has less than 2 servers configured, add a second server. Re-enable Lockdown Mode on the host.