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How to enable mysql port on your linux dedicated server?

Please refer the following steps:

1. Login to your server as root.

2. Edit csf configuration file using the following command:

vi /etc/csf/csf.conf

3. Search the line :
# Allow incoming TCP ports
TCP_IN = “20,21,22,25,26,53,80,110,143,443,465,587,993,995, 2077,2078,2082,2083,2086,2087,2095,2096,28900,2896 0,28970,28860,49030,3333″

4. Add the port no 3306 for mysql in this line.
# Allow incoming TCP ports
TCP_IN = “20,21,22,25,26,53,80,110,143,443,465,587,993,995, 2077,2078,2082,2083,2086,2087,2095,2096,28900,2896 0,28970,28860,49030,3333,3306″

5. Save the changes using by pressing: wq!

6. Refresh the firewall using the following command:

csf –r

7.Last but not the least, you also need to add the same port in TCP OUT just below TCP_IN


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