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Disable ypserv Service

An XCCDF Rule

Description

The ypserv service, which allows the system to act as a client in a NIS or NIS+ domain, should be disabled. The ypserv service can be disabled with the following command: 
$ sudo systemctl mask --now ypserv.service

Rationale

Disabling the ypserv service ensures the system is not acting as a client in a NIS or NIS+ domain. This service should be disabled unless in use.

ID
xccdf_org.ssgproject.content_rule_service_ypserv_disabled
Severity
Medium
References
Updated

Remediation Templates

A Puppet Snippet

include disable_ypserv
class disable_ypserv {
  service {'ypserv':
    enable => false,
    ensure => 'stopped',
  }
}

An Ansible Snippet

- name: Gather the package facts
  package_facts:
    manager: auto
  tags:
  - CCE-86121-1
  - disable_strategy

script:kickstart

service disable ypserv

OS Build Blueprint

[customizations.services]
masked = ["ypserv"]

A Kubernetes Patch

apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfig
spec:
  config:
    ignition:
      version: 3.1.0

A Shell Script

# Remediation is applicable only in certain platforms
if rpm --quiet -q kernel; then
SYSTEMCTL_EXEC='/usr/bin/systemctl'
"$SYSTEMCTL_EXEC" stop 'ypserv.service'
"$SYSTEMCTL_EXEC" disable 'ypserv.service'
"$SYSTEMCTL_EXEC" mask 'ypserv.service'