How to enable Port number ?

How to enable TCP Port number?
How to enable UDP Port number?

Lets see how to enable incoming and outgoing  TCP & UDP Ports in Linux / Unix Servers

Edit the configuration file

#vim /etc/csf/csf.conf

Add the necessary ports in the TCP incoming and outgoing & UDP incoming & outgoing line specified in the configuration file.

Now restart the service

#service csf restart
#csf -r
#csf -e
 

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