The NFS daemon must be disabled unless required.

From Apple OS X 10.11 Security Technical Implementation Guide

Associated with: CCI-000381

SV-82025r1_rule The NFS daemon must be disabled unless required.

Vulnerability discussion

If the system does not require access to NFS (Network File System) file shares or is not acting as an NFS server, then support for NFS is non-essential and NFS services must be disabled. NFS is a network file system protocol supported by Unix-like operating systems. Enabling any service increases the attack surface for an intruder. By disabling unnecessary services, the attack surface is minimized.

Check content

If the NFS daemon is required, this is not applicable. To check if the NFS daemon is disabled, use the following command: /usr/bin/sudo /bin/launchctl print-disabled system | /usr/bin/grep com.apple.nfsd If the results do not show the following, this is a finding. "com.apple.nfsd" => true

Fix text

To disable the NFS daemon, run the following command: /usr/bin/sudo /bin/launchctl disable system/com.apple.nfsd The system may need to be restarted for the update to take effect.

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