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This explains another Linux operation, namely Inspect the paired .socket unit and disable or stop it if that entry point is not authorized., where Socket units can listen independently and trigger services on demand; disabling only the service may not close the socket. It does not explain why Use the shadow password database with correct restrictive permissions on /etc/shadow. satisfies the stated condition.

This explains another Linux operation, namely Create an appropriate /etc/nologin notice where supported and ensure policy checks it., where login-aware services can refuse ordinary logins while allowing privileged maintenance when the nologin marker is honored. It does not explain why Use the shadow password database with correct restrictive permissions on /etc/shadow. satisfies the stated condition.

This explains another Linux operation, namely Disable that service entry in its /etc/xinetd.d/ configuration and reload xinetd where applicable., where xinetd manages individually configured on-demand network services and can disable one without deleting all service definitions. It does not explain why Use the shadow password database with correct restrictive permissions on /etc/shadow. satisfies the stated condition.

That observation checks An administrator wants to stop new non-root logins briefly while completing emergency maintenance. In this scenario it does not demonstrate Use the shadow password database with correct restrictive permissions on /etc/shadow.; the relevant evidence must establish An unprivileged user cannot read hash values from /etc/shadow while account lookups still work.

That observation checks A systemd socket-activated daemon unexpectedly starts even though its service unit is disabled. In this scenario it does not demonstrate Use the shadow password database with correct restrictive permissions on /etc/shadow.; the relevant evidence must establish An unprivileged user cannot read hash values from /etc/shadow while account lookups still work.

That observation checks An operations team needs to detect unauthorized new listening services after routine package updates. In this scenario it does not demonstrate Use the shadow password database with correct restrictive permissions on /etc/shadow.; the relevant evidence must establish An unprivileged user cannot read hash values from /etc/shadow while account lookups still work.

That symptom concerns An administrator wants to stop new non-root logins briefly while completing emergency maintenance. This concerns a separate requirement, not the one being tested. The relevant failure is Password hashes are copied into a world-readable inventory file. The current requirement calls for a different check.

That symptom concerns A legacy service uses TCP wrappers and the team must restrict which client subnets may access it. This concerns a separate requirement, not the one being tested. The relevant failure is Password hashes are copied into a world-readable inventory file. The current requirement calls for a different check.

That symptom concerns A systemd socket-activated daemon unexpectedly starts even though its service unit is disabled. This concerns a separate requirement, not the one being tested. The relevant failure is Password hashes are copied into a world-readable inventory file. The current requirement calls for a different check.

This fix is aimed at The service is stopped but a still-active socket unit relaunches it on the next connection. and would be relevant if An unused background service accepts remote connections although the business no longer needs it. The incident instead states Password hashes are copied into a world-readable inventory file. and needs Keep password hashes in the protected shadow database and remove exposed copies.

This fix is aimed at The marker is placed in the wrong path and regular users continue to log in. and would be relevant if An administrator wants to stop new non-root logins briefly while completing emergency maintenance. The incident instead states Password hashes are copied into a world-readable inventory file. and needs Keep password hashes in the protected shadow database and remove exposed copies.

This fix is aimed at The service remains enabled in xinetd even though an unrelated systemd service was stopped. and would be relevant if A legacy inetd/xinetd-supervised service must be disabled without stopping unrelated services. The incident instead states Password hashes are copied into a world-readable inventory file. and needs Keep password hashes in the protected shadow database and remove exposed copies.

Use the shadow password database with correct restrictive permissions on /etc/shadow. That operation is designed for the different case: A server must store user password hashes separately from generally readable account information. It does not perform the specific action required here: Disable and stop the unneeded service through systemctl and review any socket activation units.

Configure host-based allow/deny rules in /etc/hosts.allow and /etc/hosts.deny for an actually wrapper-aware daemon. That operation is designed for the different case: A legacy service uses TCP wrappers and the team must restrict which client subnets may access it. It does not perform the specific action required here: Disable and stop the unneeded service through systemctl and review any socket activation units.

Inspect the paired .socket unit and disable or stop it if that entry point is not authorized. That operation is designed for the different case: A systemd socket-activated daemon unexpectedly starts even though its service unit is disabled. It does not perform the specific action required here: Disable and stop the unneeded service through systemctl and review any socket activation units.

This explains another Linux operation, namely Configure host-based allow/deny rules in /etc/hosts.allow and /etc/hosts.deny for an actually wrapper-aware daemon., where TCP wrappers apply only to applications linked or configured to consult them; modern services may not honor these files. It does not explain why Disable and stop the unneeded service through systemctl and review any socket activation units. satisfies the stated condition.

This explains another Linux operation, namely Create an appropriate /etc/nologin notice where supported and ensure policy checks it., where login-aware services can refuse ordinary logins while allowing privileged maintenance when the nologin marker is honored. It does not explain why Disable and stop the unneeded service through systemctl and review any socket activation units. satisfies the stated condition.

This explains another Linux operation, namely Maintain an approved service baseline and compare current ss -lnt output to it., where A listener inventory reveals unexpected exposed sockets; the service status command alone does not list every bound port. It does not explain why Disable and stop the unneeded service through systemctl and review any socket activation units. satisfies the stated condition.

That observation checks A legacy service uses TCP wrappers and the team must restrict which client subnets may access it. In this scenario it does not demonstrate Disable and stop the unneeded service through systemctl and review any socket activation units.; the relevant evidence must establish After restart, the unwanted listener is absent and the approved services remain accessible.

That observation checks A legacy inetd/xinetd-supervised service must be disabled without stopping unrelated services. In this scenario it does not demonstrate Disable and stop the unneeded service through systemctl and review any socket activation units.; the relevant evidence must establish After restart, the unwanted listener is absent and the approved services remain accessible.

That observation checks A systemd socket-activated daemon unexpectedly starts even though its service unit is disabled. In this scenario it does not demonstrate Disable and stop the unneeded service through systemctl and review any socket activation units.; the relevant evidence must establish After restart, the unwanted listener is absent and the approved services remain accessible.

That symptom concerns An administrator wants to stop new non-root logins briefly while completing emergency maintenance. This concerns a separate requirement, not the one being tested. The relevant failure is The service is stopped but a still-active socket unit relaunches it on the next connection. The current requirement calls for a different check.

That symptom concerns An operations team needs to detect unauthorized new listening services after routine package updates. This concerns a separate requirement, not the one being tested. The relevant failure is The service is stopped but a still-active socket unit relaunches it on the next connection. The current requirement calls for a different check.

That symptom concerns A systemd socket-activated daemon unexpectedly starts even though its service unit is disabled. This concerns a separate requirement, not the one being tested. The relevant failure is The service is stopped but a still-active socket unit relaunches it on the next connection. The current requirement calls for a different check.

This fix is aimed at The marker is placed in the wrong path and regular users continue to log in. and would be relevant if An administrator wants to stop new non-root logins briefly while completing emergency maintenance. The incident instead states The service is stopped but a still-active socket unit relaunches it on the next connection. and needs Disable the corresponding socket and service units and verify no listener remains.

This fix is aimed at A non-wrapper-aware service ignores hosts.deny, leaving access unrestricted. and would be relevant if A legacy service uses TCP wrappers and the team must restrict which client subnets may access it. The incident instead states The service is stopped but a still-active socket unit relaunches it on the next connection. and needs Disable the corresponding socket and service units and verify no listener remains.

This fix is aimed at Password hashes are copied into a world-readable inventory file. and would be relevant if A server must store user password hashes separately from generally readable account information. The incident instead states The service is stopped but a still-active socket unit relaunches it on the next connection. and needs Disable the corresponding socket and service units and verify no listener remains.

Use the shadow password database with correct restrictive permissions on /etc/shadow. That operation is designed for the different case: A server must store user password hashes separately from generally readable account information. It does not perform the specific action required here: Create an appropriate /etc/nologin notice where supported and ensure policy checks it.

Inspect the paired .socket unit and disable or stop it if that entry point is not authorized. That operation is designed for the different case: A systemd socket-activated daemon unexpectedly starts even though its service unit is disabled. It does not perform the specific action required here: Create an appropriate /etc/nologin notice where supported and ensure policy checks it.

Configure host-based allow/deny rules in /etc/hosts.allow and /etc/hosts.deny for an actually wrapper-aware daemon. That operation is designed for the different case: A legacy service uses TCP wrappers and the team must restrict which client subnets may access it. It does not perform the specific action required here: Create an appropriate /etc/nologin notice where supported and ensure policy checks it.

This explains another Linux operation, namely Maintain an approved service baseline and compare current ss -lnt output to it., where A listener inventory reveals unexpected exposed sockets; the service status command alone does not list every bound port. It does not explain why Create an appropriate /etc/nologin notice where supported and ensure policy checks it. satisfies the stated condition.

This explains another Linux operation, namely Disable and stop the unneeded service through systemctl and review any socket activation units., where Stopping and disabling unused services reduces exposed listeners; a socket unit can independently reactivate its service. It does not explain why Create an appropriate /etc/nologin notice where supported and ensure policy checks it. satisfies the stated condition.

This explains another Linux operation, namely Configure host-based allow/deny rules in /etc/hosts.allow and /etc/hosts.deny for an actually wrapper-aware daemon., where TCP wrappers apply only to applications linked or configured to consult them; modern services may not honor these files. It does not explain why Create an appropriate /etc/nologin notice where supported and ensure policy checks it. satisfies the stated condition.