vi /etc/csf/csf.allow
192.168.100.100
vi /etc/csf/csf.conf
TCP_IN section remove your SSH port
or
vi /etc/csf/csf.conf
tcp|in|d=22|s=192.168.100.100
csf -ra
csf allow ssh specific IP
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Tag Archives: csf
csf enable port
vi /etc/csf/csf.conf
check TCP_IN and TCP_OUT port list and restart csf -r
csf whitelist ip command line
csf -a IP
csf -a IP/24