RAS on RedHat 6.0

Hello,

My company is looking for launch RAS on Redhat 6.0 box which is our DNS/Mail server.

I am not sure exactly how to implement this project. I couldn’t find any good documentation on this project. I need some help that first, I want to understand how RAS operate….just some one dial the number and server picks it up and let him/her in?

A couple of users will connect to server once a blue-moon and want to check email and access to Internet…just like little an ISP.

Pleasetell me details that I should know before start this project or a URL for documentation.

Thank you in advance.

Sunny,