The SSH daemon must be configured with the Department of Defense (DoD) login banner.

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The SSH daemon must be configured with the Department of Defense (DoD) login banner.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-208927	OL6-00-000240	SV-208927r603263_rule		Medium

Description
The warning message reinforces policy awareness during the logon process and facilitates possible legal action against attackers. Alternatively, systems whose ownership should not be obvious should ensure usage of a banner that does not provide easy attribution.

STIG	Date
Oracle Linux 6 Security Technical Implementation Guide	2021-06-14

Details

Check Text ( C-9180r357761_chk )
To determine how the SSH daemon's "Banner" option is set, run the following command: # grep -i Banner /etc/ssh/sshd_config If a line indicating /etc/issue is returned, then the required value is set. If the required value is not set, this is a finding.

Fix Text (F-9180r357762_fix)
To enable the warning banner and ensure it is consistent across the system, add or correct the following line in "/etc/ssh/sshd_config": Banner /etc/issue Another section contains information on how to create an appropriate system-wide warning banner.