Hi, I have this problem at a customer's. It's actually a small restaurant with the owner's apartment on top. They have a single phone line with ADSL on it and a 54g wifi modem/router given by the phone company (with limited customization possibilities). Now, they want to offer free wifi access to customers using that connection. At first they just wanted a wifi range extender but I warned them not to do that, as they have some shares on personal computers(2, both with Win7 and connected with wifi) and it would be an issue both for privacy and security. Being a small business, the aim is to use the same adsl connection they already have, keep customers away from the private network and spend as little as possible in new devices. What I though of as a solution is to install a new cheap wifi router(like a linksys E1000), cascading from the 1st one through a wifi bridge. So I will have a pre-existing network like 192.168.1.0/24 and a second network like 192.168.2.0/24. The problem is, will windows computers in 192.168.2.0/24 be cut off from windows shares in 192.168.1.0/24 ? I actually found no informations about windows trying or not to map networks beyond a gateway and in different subnets, but actually in such configuration it really could, as the second router will of course resolve and route requests going to the 192.168.1.0/24 network. There are then 2 solutions i though of. The cheaper one consists in simply adding firewall rules to block the 445 and 139 tcp ports connections to and from 192.168.2.0/24. The second one would involve deactivating wifi on the modem router, and adding a 3rd wifi router cascading from the 1st one(another subnet, 192.168.3.0/24), making sure that the modem router won't have a route rule to route traffic both to the 192.168.1.3/24 and 192.168.1.2/24 subnets. What might be the best solution out there? And for future reference, is windows able to map windows shares beyond a gateway (or will it do it with special settings)?

Hi, In fact, a home wifi router has a NAT module and a Switch module. The situation when the lan ports connect two subnets is just like the two subnets that connnect a same switcher. So you can manually add a route list to access the other subnet. If you want to avoid this, you need to set up vlan on your switch. Also, you may use 3 routers to set up your network. one of them is used for connecting ADSL, then use the others to connect the respective subnet. If you have further question about this, please contact the manufacturer. Because this forum focuses on Windows 7. But your question is related to network. Thanks. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”