CSF – Config server firewall is a firewall configuration tool for WHM/cPanel server. CSF is available as a plugin of WHM by default. In some strange situation, you will be facing some errors with csf, like “csf command not found”
Error details:
“csf: command not found” while executing the command via command line.
[root@srv1]# csf
-bash: csf: command not found
[root@srv1]# csf -e
-bash: csf: command not found
Solution:
Step 1: At first, check if the CSF is installed or not on the server. If it is installed, most probably due to the absence of ‘perl scripts’ in WHM/cPanel.
Step 2: Take a back up of csf.conf, csf.allow and csf,deny files for our security.
Step 3: Update CSF by executing the following command;
curl -s configserver.com/free/csupdate | perl
The config server firewall should be updated after executing the command. Then, try to run the csf command and it must be work properly.
