How to prevent a program from accessing to the Internet?

[jd1008]

On 10/18/2014 07:09 AM, Paul Smith wrote:
> Dear All,
>
> I would like to prevent a program from accessing to the Internet. Any ideas?
>
> Thanks in advance,
>
> Paul
A program? or a User?
If a program, then you need to understand somthing about *nix'es and *nux'es

Even if it were possible to prevent a specific program from accessing 
the internet,
there would be nothing to prevent a user from copying the program to 
some file
and rename that file to something else, and run it.

But if you mean to block a user, then the link provided by Rahul would 
be a solution.