CWP: How to Secure Webmin using Webmin GUI on CentOS 7

1.Restrict IP Access
Goto Webmin >> Webmin Configuration >> IP Access Control

2.Setup Auto-Logout for session Inactivity
Goto Webmin >> Webmin Configuration >> Authentication

3. Change the webmin Port 
Goto Webmin >> Webmin Configuration >> Post & Addresses

Don't forget to allow new port on CSF Firewall.