applying security on server to restrict unauthorized attempts
I am a new one for Fedora Core 3. I want to know, how can i setup security in fedora core 3 server to restrict unauthorized attempts. I have try so much to resolve this problem but unable to solve it. If anyone have any link are matterial regarding this problem then please let me know.
Please tell me the step-by-step commands used to resolve this problem.
My Configration is as:
OS:Fedora Core 3
Application Server: Tomcat 5.0.28
Thanks and Regards: