Prevent wireless users from access to LAN PCs

Linksys Wrt160n wireless router
January 7, 2010 at 16:45:12
Specs: XP SP2
So we have a restaurant--previously the setup was pretty basic:

WAN ---> Linksys router (LAN IP= ---> client PCs (static

We recently added another router into the mix to add wireless access for now the setup is:

WAN ---> Linksys WIFI router ( ---> original Linksys router
(WAN link now has address, and LAN link has address ----> client PCs (static addresses, same as before--on
10.0.100 subnet)

The WiFi router is configured to give out DHCP addresses to wireless
clients ( through with WPA2 encryption.

My question is, how do I configure this setup to make sure that no
computers on wireless ( can connect/ping/see/etc any
computers on the LAN ( Security is a big concern for me
and I want to know how to best set this up.

Thanks very much in advance.

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January 7, 2010 at 18:26:37
As far as I know, if you didn't create a routing table to allow it, they won't have access across subnets.

How do you know when a politician is lying? His mouth is moving.

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January 8, 2010 at 13:27:29
You would engage the windows firewall or other third party software firewall on your lan computers. You would block the entire 192.168.1.x subnet.

Since they have to pass thru the 10.x.x.x subnet to get to the internet it is entirely possible for someone to connect to a lan machine.

This is where you would want a vlan capable router. Vlan1 would be your lan. Vlan2 would be the wireless. With this physical seperation there would be no need for software firewalls on the lan machines and there would be no way for the wireless to get to the lan pcs.

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