The CSF project is abandoned, and newly installed CWP Pro already has several issues during installation.
Here is the topic: https://www.jaspreet.net/2025/09/06/3180/how-to-fix-csf-firewall-error-oops-unable-to-download-no-host-option-provided/

@Sandeep B. Do you have any idea how to replace CSF in CWP Pro servers?

🔍 Issue Summary (CSF v15.00):

• csf and lfd are both properly installed and running:

  • systemctl status csf → active (exited)

  • systemctl status lfd → active (running)

  • Manual commands such as csf -e, csf -r work as expected

  • lfd.log confirms proper startup, log watching, and IP tracking

However, the CSF firewall still shows as "Disabled" on the CWP Admin interface.

---

✅ What Works Correctly (on another server):

• On a similar environment (CWP Pro + AlmaLinux 9.x), the CSF firewall is correctly shown as active in the CWP interface when using csf v14.24 (CentOS Web Panel)

• All functionality and UI detection works fine with that version

Check out: https://starburst.help/control-web-panel-cwp/control-web-panel-cwp-admin-tutorials/csf-firewall-error-oops-unable-to-download-no-host-option-provided/

CSF replacement tested in old Centos 7, AlmaLinux 8.10 and AlmaLinux 9.6

The CSF project is continuing as Open Source project, the website is here: https://docs.configserver.dev/

Github: https://github.com/Aetherinox/csf-firewall

And as it was suggested in article https://www.jaspreet.net/2025/09/06/3180/how-to-fix-csf-firewall-error-oops-unable-to-download-no-host-option-provided/ you have to update the content of
/etc/csf/downloadserver

Comment out (or delete) the old content of the file and set the new line of download server: download.configserver.dev

Restart CSF and from the GUI of CWP update Firewall.
The result will be appear in the screen, and the CFS/LFD will update to the current version: Status: csf: v15.01 (CentOS Web Panel)

Or, you can use the solution suggested by @Starburst above.