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

From Oracle Linux 6 Security Technical Implementation Guide

Associated with: CCI-000048

SV-65009r1_rule The SSH daemon must be configured with the Department of Defense (DoD) login banner.

Vulnerability discussion

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.

Check content

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

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.

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