Opening ports and closing ports in CSF is easy. But it can be a bit tricky to open a port to a specific IP in CSF.
What if we need to open the MySQL port only to your home IP ?
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Or another port to communicate between your payment gateway ? Here is the tip.
If you need to open the port XXXX to the ip aa.bb.cc.dd , Add the following lines to /etc/csf/csf.allow
tcp:in:d=XXXX:d=aa.bb.cc.dd tcp:out:d=XXXX:d=aa.bb.cc.dd
and restart csf
csf -r So to open the mysql port to IP 11.22.33.44 , add the following lines. tcp:in:d=3306:d=11.22.33.44 tcp:out:d:3306:d=11.22.33.44
Is it possible to allow a specific port with an IPv6 in this way? I’ve tried replacing ipv4 address with ipv6, it’s not working. I need that. Please help me.