AlmaLinux OS 9 must not have the ypserv package installed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-269355	ALMA-09-031150	SV-269355r1050238_rule		Medium

Description

The NIS service provides an unencrypted authentication service, which does not provide for the confidentiality and integrity of user passwords or the remote session. Removing the "ypserv" package decreases the risk of the accidental (or intentional) activation of NIS or NIS+ services.

STIG	Date
CloudLinux AlmaLinux OS 9 Security Technical Implementation Guide	2025-05-22

Details

Check Text (C-73386r1048441_chk)

Verify that the ypserv package is not installed with the following command:

$ dnf list --installed ypserv

Error: No matching Packages to list

If the "ypserv" package is installed, this is a finding.

Fix Text (F-73287r1048442_fix)

Remove the nfs-utils package with the following command:

$ dnf remove ypserv