How can I share my DSL connection with a neighbor, but not allow them access to my networked compute

I have a pretty fast DSL connection that I would like to share with my neighbors, but I don't trust them so much that they should be able to contact my two computers (which can freely communicate on a wired ethernet connection using a broadband router).

I can use either a wired or wireless connection with my neightbors (our homes are very close).

What exact model of hardware (router, switch, hub, wireless access point, etc?) do I need to put between my network and theirs which allows any connection to the outside world but no packets to my computers? I don't want to configure my computer, I want the networking hardware to prevent any packets from reaching my computers.

I am afraid that my neighbors may accidentally infect their computers with spyware or viruses, and I don't want to rely on windows XP firewall, I want a hardware solution. I also don't want my packets to be able to be sniffed by them or any wireless connection.

How can I share my DSL connection with a neighbor, but not allow them access to my networked computers?noton

First it's a violation of every DSL provider's TOS that I know of.

To do it however all you need is three routers or one good one that does subnets.

DSL %26lt;-%26gt; Router (192.168.1.1)

%26lt;Home Router Gateway on 192.168.1.1/Static IP 192.168.1.2, Internal Lan 192.168.32.x)

%26lt;Neighbor Router Gateway on 192.168.1.1/Static IP 192.168.1.3, Internal Lan 192.168.16.x)