Open ports in CSF Firewall through SSH

CSF firewall is too easy to configure in both ways (through WHM and SSH).

- Login to your Linux machine through SSH. Open csf.conf file using any text editor.
/etc/csf/csf.conf

- Add the port you wish to open and restart CSF firewall for the changes to take into effect. 
# Allow incoming TCP ports
TCP_IN = "20,443,465,21,22,587,993,25,53,80,110,143,995"

# Allow outgoing TCP ports
TCP_OUT = "20,21,443,587,22,25,80,110,43,53"

csf -r  // To restart CSF firewall

 

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