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Enable the Hardware RNG Entropy Gatherer Service

An XCCDF Rule

Description

The Hardware RNG Entropy Gatherer service should be enabled. The rngd service can be enabled with the following command: 
$ sudo systemctl enable rngd.service

Rationale

The rngd service feeds random data from hardware device to kernel random device.

ID
xccdf_org.ssgproject.content_rule_service_rngd_enabled
Severity
Low
References
Updated

Remediation Templates

A Puppet Snippet

include enable_rngd
class enable_rngd {
  service {'rngd':
    enable => true,
    ensure => 'running',
  }
}

OS Build Blueprint

[customizations.services]
enabled = ["rngd"]

A Shell Script

# Remediation is applicable only in certain platforms
if rpm --quiet -q kernel; then
SYSTEMCTL_EXEC='/usr/bin/systemctl'
"$SYSTEMCTL_EXEC" unmask 'rngd.service'
"$SYSTEMCTL_EXEC" start 'rngd.service'
"$SYSTEMCTL_EXEC" enable 'rngd.service'

script:kickstart

service enable rngd

An Ansible Snippet

- name: Gather the package facts
  package_facts:
    manager: auto
  tags:
  - enable_strategy
  - low_complexity