IBM z/OS ACF2 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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IBM z/OS data sets for the Base TCP/IP component must be properly protected.
MVS data sets of the Base TCP/IP component provide the configuration, operational, and executable properties of IBMs TCP/IP system product. Failure to properly secure these data sets may lead to un...Rule Medium Severity -
IBM z/OS Started tasks for the Base TCP/IP component must be defined in accordance with security requirements.
To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system. Organizational user...Rule Medium Severity -
IBM z/OS SMF recording options for the TN3270 Telnet Server must be properly specified.
If events associated with nonlocal administrative access or diagnostic sessions are not logged, a major tool for assessing and investigating attacks would not be available. This requirement addres...Rule Medium Severity -
IBM z/OS SSL encryption options for the TN3270 Telnet Server must be specified properly for each statement that defines a SECUREPORT or within the TELNETGLOBALS.
Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote access session. Remote access is access to DoD nonpublic information s...Rule Medium Severity -
IBM z/OS TSOAUTH resources must be restricted to authorized users.
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be...Rule Medium Severity -
IBM z/OS UNIX security parameters in etc/profile must be properly specified.
Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system....Rule Medium Severity -
IBM z/OS UNIX resources must be protected in accordance with security requirements.
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be...Rule Medium Severity -
IBM z/OS BPX resource(s) must be protected in accordance with security requirements.
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be...Rule Medium Severity -
IBM z/OS UNIX MVS data sets with z/OS UNIX components must be properly protected.
Access control policies include: identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include: access control lists, access control matrices, an...Rule Medium Severity -
IBM z/OS UNIX MVS data sets or HFS objects must be properly protected.
If the operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part ...Rule Medium Severity -
IBM z/OS UNIX MVS data sets used as step libraries in /etc/steplib must be properly protected.
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be...Rule Medium Severity -
IBM z/OS UNIX HFS MapName files security parameters must be properly specified.
Removal of unneeded or non-secure functions, ports, protocols, and services mitigate the risk of unauthorized connection of devices, unauthorized transfer of information, or other exploitation of t...Rule Medium Severity -
IBM z/OS UNIX security parameters for restricted network service(s) in /etc/inetd.conf must be properly specified.
In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable...Rule Medium Severity -
IBM z/OS user account for the z/OS UNIX SUPERSUSER userid must be properly defined.
To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system. Organizational user...Rule Medium Severity -
IBM z/OS UNIX user accounts must be properly defined.
To ensure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system. Organizational user...Rule Medium Severity -
IBM z/OS startup user account for the z/OS UNIX Telnet Server must be defined properly.
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be...Rule Medium Severity -
IBM z/OS HFS objects for the z/OS UNIX Telnet Server must be properly protected.
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be...Rule Medium Severity -
IBM z/OS UNIX Telnet Server warning banner must be properly specified.
Display of a standardized and approved use notification before granting access to the publicly accessible operating system ensures privacy and security notification verbiage used is consistent with...Rule Medium Severity -
IBM z/OS System data sets used to support the VTAM network must be properly secured.
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be...Rule Medium Severity -
IBM z/OS TCPIP.DATA configuration statement must contain the DOMAINORIGIN or DOMAIN specified for each TCP/IP defined.
If data origin authentication and data integrity verification are not performed, the resultant response could be forged, it may have come from a poisoned cache, the packets could have been intercep...Rule Medium Severity
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