isolating shared network connection

a company wants to share a DSL connection with 4 home users while keeping itÅ›
private network and all itÅ› resources and shares secured and inacessable by
the other network users

and this is a diagram of the network
http://www.boomspeed.com/darkknight/isolate.jpg

i hope the question is clear enough
Thanks

You will need to put a firewall between company and DSL router.

"El-Gazzaz" wrote:

> a company wants to share a DSL connection with 4 home users while keeping itÅ›
> private network and all itÅ› resources and shares secured and inacessable by
> the other network users
>
> and this is a diagram of the network
> http://www.boomspeed.com/darkknight/isolate.jpg
>
> i hope the question is clear enough
> Thanks
>