Quoting Raymond Norton (ray at lctn.k12.mn.us):
> Presently our church uses Winroute to access the Internet via a Win2000 
>  box. It is causing a few problems, so I would like to set up a Linux box 
>  to replace it. I am using an  external Netgear ISDN modem.  I need to  
> be able to forward  specific ports  to another PC, have dial on demand, 
> and auto disconnect after 10 minutes of inactivity. I am going to use 
> RedHat 7.1. I need to know what I would have to enable or add to this 
>  box to work for this application.
> 

Search google for Linux Dial-on-Demmand HOWTO.

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