Real world subnetting question

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Depends, does the wireless device support multiple SSIDS?

Also you could install a firewall device with two interfaces and patch a WAP into each interface and this should secure both wireless networks if access rules are configured correctly.

 

Some Cisco WAPs support multiple SSIDs. Basically you can assign each wireless network to a VLAN and configure security policies for each network.

Probably too pricey for this kinda network though.

 

No probs mate. If the router isnt suitable you could go for a device that supports ADSL with a four port switch and also a DMZ port.

You could then patch in a WAP to the DMZ port and this would be the public network. Hopefully by default the DMZ cannot access the LAN with the POS equipment on it, if not you can configure a access rule to do this. Patch in another WAP into the LAN port (one of them) and you can use the POS equipment as before.

 

You can get a firewall which has a DMZ port and patch in two WAPs which shouldnt cost too much.

I take it you have a budget for this project?

 

You will be able to connect to both WAPs but they will still be on the same LAN which is a security risk. I believe the Linksys WRT300N has a ADSL interface and a 4 port switch so the second WAP is going to be plugged into that so basically you are connecting everything together with no security.

Probably the cheapest way to get this setup is to buy a firewall with a LAN and DMZ interface. Basically this means you can patch a WAP into each interface and configure it as needed, one can be public (for general web browsing) and one can be private for the POS equipment.

 

I noticed you work for an IT company, is there not a particular brand of firewall that you would use? If so if one has two interfaces, one for LAN and one for the DMZ, and also supports ADSL then you could use that with two WAPs.

 

Yup,that should work mate.