IBM z/OS FTP.DATA configuration statements for the FTP Server must be specified in accordance with requirements.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-255895	ACF2-FT-000120	SV-255895r991589_rule		Medium

Description

This requirement is intended to cover both traditional interactive logons to information systems and general accesses to information systems that occur in other types of architectural configurations (e.g., service-oriented architectures).

STIG	Date
IBM z/OS ACF2 Security Technical Implementation Guide	2025-06-24

Details

Check Text (C-59572r877343_chk)

Refer to the Data configuration file specified on the SYSFTPD DD statement in the FTP started task JCL.

If the UMASK statement is coded with a value of "077", this is not a finding.

Fix Text (F-59515r877344_fix)

Configure the FTP configuration to include the UMASK statement with a value of "077".

If the FTP Server requires a UMASK value less restrictive than "077", requirements should be justified and documented with the ISSO.