I am still fairly new to linux and using the terminal, but i have a question for anyone that is willing to take the time and explain.

     
Securing the Console
     You can limit where root can log on by restricting it to a specific set of                    
       terminals. To do this, edit the contents of the /etc/securetty  file.
     All devices you want to allow root to log in from should be listed in the   
       file.

How exactly am I supposed to limit my root to one. I would assume this is something automatic as I only have one user on my current machine, but when i view my securetty file, i get an extensive list of tty(1-63) for example.

Or does this only apply to the top console section

      
 Local X displays (allows empty passwords    
         with pam_unix's nullok_secure)

:0

:0.0

:0.1

:1

:1.0

:1.1

:2

:2.0

:2.1

:3

:3.0

:3.1

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