how utilize several IP's on one line

[David Banning]

> Connect the DSL modem to a switch or hub, and connect several  
> machines to that, each configured statically to use the /29 subnet  
> which your ISP is making available to you.
> 
> This is assuming your DSL modem deals with any PPPoE/PPPoA login  
> stuff itself...if not, you might have to get a broadband router or  
> config a FreeBSD box to do the PPPoE stuff and then route the subnet  
> internally (perhaps using RFC-1918 addresses via natd & the  
> redirect_address directive).

Very helpful. Thanks Chuck. What decides which IP will go to each machine?
The router? If so what kind of router is that called? What is the term
I can search google on this to learn more?