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

IBM z/OS startup user account for the z/OS UNIX Telnet Server must be defined properly.

DISA Rule

SV-223639r1225860_rule

Vulnerability Number

V-223639

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

ACF2-UT-000010

Severity

CAT II

CCI(s)

• CCI-000213 - Enforce approved authorizations for logical access to information and system resources in accordance with applicable access control policies.

Weight

10

Fix Recommendation

Configure the otelnetd startup command in the inetd.conf file to be defined for the z/OS UNIX kernel.

Check Contents

From the ISPF Command Shell enter:
OMVS
CD /etc
ls (to make sure OTELNET is active)
cat otelnetd.conf

If the otelnetd command specifies OMVS or OMVSKERN as the user, this is not a finding.

If the otelnetd command specifies any user other than OMVS or OMVSKERN, this is a finding.

Vulnerability Number

V-223639

Documentable

False

Rule Version

ACF2-UT-000010

Severity Override Guidance

From the ISPF Command Shell enter:
OMVS
CD /etc
ls (to make sure OTELNET is active)
cat otelnetd.conf

If the otelnetd command specifies OMVS or OMVSKERN as the user, this is not a finding.

If the otelnetd command specifies any user other than OMVS or OMVSKERN, this is a finding.

Check Content Reference

M

Target Key

4100