How to allow port number in WHM server firewall

Step 1) In the Navigation panel search "ConfigServer Security & Firewall" and click on that.

Step 2) Find "Firewall Configuration" option in right hand and click on that.

 

Step 3) Find "Allow incoming TCP_IN/TCP_OUT ports" and add port number for allowing in server.

 

Step 4) Go to the bottom and click on "Change" button for Changing the updated firewall rule.

 

Step 5) Now, Click on "restart csf+lfd" button for Restarting the firewall.