STIGUI
V-256873CAT II — Medium severitySV-256873r958726_rule

Automatic Call Answering to the Hardware Management Console must be disabled.

Rule version HMC0050 · STIG v2 · 2026-08-31

Discussion

Automatic Call Answering to the Hardware Management Console allows unrestricted access by unauthorized personnel and could lead to a bypass of security, access to the system, and an altering of the environment. This would result in a loss of secure operations and impact the integrity of the operating environment, files, and programs. Note: Dial-in access to the Hardware Management Console is prohibited. Also, many newer processors (e.g., zEC12/zBC12 processors) will not have modems. If there is no modem, this check is not applicable.

Check

Have the System Administrator verify if either the Enable Remote Operations parameter or the Automatic Call Answering parameter are active on the Enable Hardware Management Console Services panel.

The Enable Remote Operations is found under Customize Remote Services and Automatic Call Answering is found under Customize Auto Answer Settings.

If either of the above options are active, then this is a FINDING.

Fix

The System Administrator must set dial-in facility to off. Do this by ensuring that both the Enable Remote Operations parameter and the Automatic Call Answering parameter are turned off.

In Check Content: Enable Remote Operations is found under Customize Remote Services and Automatic Call Answering is found under Customize Auto Answer Settings.

Identifiers

Group ID
V-256873
Group title
SRG-OS-000324-GPOS-00125
Rule ID
SV-256873r958726_rule
Check ID
C-60548r890963_chk
Fix ID
F-60491r890964_fix