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

From MAC OSX 10.6 Workstation Security Technical Implementation Guide

Associated with IA controls: ECSC-1

Associated with: CCI-001182

SV-38766r1_rule For systems using DNS resolution, at least two name servers must be configured.

Vulnerability discussion

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.

Check content

Open a terminal session and use the following command to verify the DNS name servers. grep nameserver /etc/resolv.conf If less than two lines are returned that are not commented out, this is a finding.

Fix text

Open a terminal session and use the following command to edit the /etc/resolv.conf and add additional "nameserver" lines until at least two are present. sudo pico /etc/resolv.conf

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