Apply security policy to client?

cd c:\my_policy_file_directory

appletviewer -J-Djava.security.policy=policy.file http://localhost/hello.html

I came across the above in an old thread in another forum, it applies the security policy to the html page for the client but how would this work for a normal user viewing the page from a different pc?

I trying out the RMI tutorial on this site & running the server in tomcat.

[445 byte] By [Rebels_Mascota] at [2007-10-2 9:44:19]