How to manage csf via command line in linux server

We can install the csf firewall to secure the Linux servers. We can manage the firewall via command line easily. Please read our the following article and command structure.

Start the firewall rules

Csf -s

Example: #csf -s

Flush/Stop firewall rules (note: lfd may restart csf)

csf -f

Example: #csf -f

Restart the firewall rules

csf -r

Example: #csf -r

Deny an IP and add to /etc/csf/csf.deny

csf -d 

Example: #csf -d 103.129.97.14

Flush all IPs from the temporary IP entries

csf -tf

Example: #csf -tf

Remove an IP from the temporary IP ban or allow list

csf -tr

Example: #csf -tr 103.129.97.14

Allow an IP and add to /etc/csf/csf.allow

csf -a

Example: #csf -a 103.129.97.14

Unblock an IP and remove from /etc/csf/csf.deny

csf -dr

Example: #csf -dr 103.129.97.14

Displays the current list of temporary allow and deny IP entries with their TTL and comment

csf -t

Search the iptables and ip6tables rules for a match (e.g. IP, CIDR, Port Number)

csf -g

Example: #csf -g 103.129.97.14

Remove and unblock all entries in /etc/csf/csf.deny

csf -df