ConfigServer Security & Firewall (CSF) Release Notes
Last modified: 2026 February 25
ConfigServer Security & Firewall 16.05-1
2026 February 25
Important:
- As of August 31, 2025, the developers of CSF no longer maintain or support it. They have released CSF under the GPLv3 license.
- On supported cPanel & WHM versions, WebPros International, LLC maintains its own version of CSF for security and stability updates only. We do not provide help with CSF configuration or troubleshooting. For more information, read our How to Install ConfigServer Security & Firewall (CSF) documentation.