Customer wifi easy to set up - but make sure its secure

There is a growing trend for places like restaurants and retail stores to provide free wifi access for customers.  Its easy to set up - just plug a wifi router in to your internet modem, right?  Not quite.  It is important to set it up and maintain it so it is properly protected by a firewall, and is not connected to your internal systems.  You don't want customers or internet malfeasors to be able to get access to, or compromise your internal systems and the information it contains - such as customer credit card information. Storefrontbacktalk has a good article that details the risks, and what steps to take to avoid it.