How do I change the default linux security options? Like allowing certain hings through? It's RedHat 7.2 Can someone help me?

Thanks,
Michael

Pleae help me!

Thanks,
Michael Barker

Edit the config files? Mostly located in /etc

I finally figured out how..

Command: lokkit

Thanks,
Michael

You can install a firewall, which is using IPchaines, IPchaines should be there already. Close all ports, you are not using.