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

From VMware vSphere ESXi 6.0 Security Technical Implementation Guide

Associated with: CCI-000048

SV-77677r1_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 verify the Banner setting, run the following command: # grep -i "^Banner" /etc/ssh/sshd_config If there is no output or the output is not exactly "Banner /etc/issue", this is a finding.

Fix text

To set the Banner setting, add or correct the following line in "/etc/ssh/sshd_config": Banner /etc/issue

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.