PHTN-30-000038 - The Photon operating system must configure sshd to disconnect idle Secure Shell (SSH) sessions.

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Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on a console or console port that has been left unattended.


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Ensure the 'ClientAliveCountMax' line is uncommented and set to the following:

ClientAliveCountMax 0

At the command line, run the following command:

# systemctl restart sshd.service

See Also

Item Details

References: CAT|II, CCI|CCI-001133, Rule-ID|SV-256514r887216_rule, STIG-ID|PHTN-30-000038, Vuln-ID|V-256514

Plugin: Unix

Control ID: 9658e86c021d0f2b0c0af1231938e17319e8300570d3a5e9505c046a093a12e6