STIGQter: STIG Summary: IBM z/OS ACF2 Security Technical Implementation Guide Version: 9 Release: 9 Benchmark Date: 01 Jul 2026:

IBM z/OS UNIX Telnet Server Startup parameters must be properly specified to display the banner.

DISA Rule

SV-223643r1225866_rule

Vulnerability Number

V-223643

Group Title

SRG-OS-000228-GPOS-00088

Rule Version

ACF2-UT-000050

Severity

CAT II

CCI(s)

• CCI-001384 - For publicly accessible systems, display system use information with organization-defined conditions before granting further access to the publicly accessible system.
• CCI-001385 - For publicly accessible systems, displays references, if any, to monitoring that are consistent with privacy accommodations for such systems that generally prohibit those activities.
• CCI-001386 - For publicly accessible systems, displays references, if any, to recording that are consistent with privacy accommodations for such systems that generally prohibit those activities.
• CCI-001387 - For publicly accessible systems, displays references, if any, to auditing that are consistent with privacy accommodations for such systems that generally prohibit those activities.
• CCI-001388 - For publicly accessible systems, includes a description of the authorized uses of the system.

Weight

10

Fix Recommendation

Configure the startup parameters in the inetd.conf file for otelnetd to exclude option -h.

Note: -h indicates that the logon banner should not be displayed.

Check Contents

From the ISPF Command Shell enter:
ISHELL

Enter /etc/ for a pathname; a CD /etc/ may need to be issued.
select FILE NAME inetd.conf

If Option -h is included on the otelnetd command, this is a finding.

Vulnerability Number

V-223643

Documentable

False

Rule Version

ACF2-UT-000050

Severity Override Guidance

From the ISPF Command Shell enter:
ISHELL

Enter /etc/ for a pathname; a CD /etc/ may need to be issued.
select FILE NAME inetd.conf

If Option -h is included on the otelnetd command, this is a finding.

Check Content Reference

M

Target Key

4100