NAT Router / Turn off LAN routing?

[Fred Marshall]

Is there a way to set up an inexpensive router so that it only routes its
LAN ports to the WAN and not to each other? Seems simple enough.

Purpose: keep the LAN computers disconnected from one another but have
access to the WAN / Internet.

If so, which one(s) and how?

I don't want to have to configure any of the client computers on the LAN -
so firewalls on them won't work for this purpose. The idea is to support a
wireless hot spot type of system configuration with no fuss transient users.

Thanks,

Fred

 

[allan grossman [mvp]]

Hi, Fred -

Sure there is. If the router has port filtering
capabilities (most consumer broadband routers do), block
ports 135, 137, 138, 139 and 445 on the router. If all
the machines are plugged into the router they won't be
able to see each other but will be able to connect to the
Internet.

Hope this helps -

 

[Steve Winograd [MVP]]

Is there a way to set up an inexpensive router so that it only routes its
LAN ports to the WAN and not to each other? Seems simple enough.

Purpose: keep the LAN computers disconnected from one another but have
access to the WAN / Internet.

If so, which one(s) and how?

I don't want to have to configure any of the client computers on the LAN -
so firewalls on them won't work for this purpose. The idea is to support a
wireless hot spot type of system configuration with no fuss transient users.

Thanks,

Fred

Most inexpensive routers have a built-in multi-port hardware switch
that connects the computers to each other. Traffic between the
computers doesn't go through the routing hardware or software. I'm
not aware of any way to limit or control such LAN traffic on such a
basic device.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

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