Mapped to NIST 800-171 Requirement: 3.1.9
CMMC Assessment Objective: AC.L2-3.1.9[a]
What This Objective Means
Before a user logs into a system that processes or stores CUI, they should be presented with a clear system use notification, which is a crucial aspect of acceptable use policies. This typically includes:
• A warning that the system is monitored
• A reminder that only authorized access is permitted
• An acknowledgment that the user consents to monitoring by continuing
These notifications are typically displayed on login screens across:
• Workstations and laptops
• VPN and remote access portals
• Internal systems and administrative consoles
This objective ensures those mechanisms are present and functional.
Why It Matters
Login banners help:
• Set expectations for behavior and monitoring
• Serve as legal consent for system monitoring and data collection
• Reinforce security awareness before access is granted
They are often required by contract clauses and federal compliance regulations.
How to Implement It
• Configure login banners on all systems where CUI may be accessed as part of your IT security policies
◦ Windows: Use Group Policy to set an interactive logon message
◦ Linux: Modify /etc/issue or /etc/motd
◦ Web portals and VPNs: Add pre-login text or HTML disclaimers
• Include:
◦ Authorized use disclaimer
◦ Monitoring notice
◦ Consent statement
• Standardize the language across all platforms
Evidence the Assessor Will Look For
• Screenshots or photos of system use banners on login screens
• Policy or documentation showing the required banner language as part of a user access policy
• Configuration settings that define or deploy banners (e.g., GPO, SSH config)
• User guidance or training materials referencing login notifications
Common Gaps
• Banners deployed on some systems but not others
• No monitoring or consent language included
• Banners are outdated, missing, or disabled by configuration changes
How Cuick Trac Helps
Cuick Trac supports this control by:
• Displaying consistent system use notifications across all secure enclave entry points
• Providing default banner language that meets CMMC and federal standards, aligning with security compliance it
• Ensuring users acknowledge access conditions before entry
• Helping teams configure their own systems to match Cuick Trac standards
With Cuick Trac, everyone who accesses your systems knows the rules—and agrees to follow them.
Final CTA
Access starts with awareness.
Schedule a Cuick Trac demo and make sure every login begins with a clear, compliant system use notice.