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The macOS system must be configured with the SSH daemon LoginGraceTime set to 30 or less.


Overview

Finding ID Version Rule ID IA Controls Severity
V-230766 APPL-11-000053 SV-230766r599842_rule Medium
Description
If SSH is not being used, this is Not Applicable. The SSH daemon "LoginGraceTime" must be set correctly. To check the amount of time that a user can log on through SSH, run the following command: /usr/bin/grep ^LoginGraceTime /etc/ssh/sshd_config If the value is not set to "30" or less, this is a finding.
STIG Date
Apple macOS 11 (Big Sur) Security Technical Implementation Guide 2020-11-27

Details

Check Text ( C-33711r591420_chk )
The SSH daemon "LoginGraceTime" must be set correctly. To check the amount of time that a user can log on through SSH, run the following command:

/usr/bin/grep ^LoginGraceTime /etc/ssh/sshd_config

If the value is not set to "30" or less, this is a finding.
Fix Text (F-33684r591421_fix)
To ensure that "LoginGraceTime" is configured correctly, run the following command:

/usr/bin/sudo /usr/bin/sed -i.bak 's/.*LoginGraceTime.*/LoginGraceTime 30/' /etc/ssh/sshd_config