i'm installing a wireless router for a friend of mine who runs a cafe. it's primarily so he can use his new laptop as well as his main office desktop, and he's bought a wireless printer as well.
however he also wants to offer open access wireless to his cafe customers, so people on their lunch breaks can bring in their laptops and check emails etc.
the issue here is that all his accounting and important company data is held on the office desktop, and he needs to ensure this stays secure. in short, we want to offer people internet access, but not to allow them access to the windows network (it's a workgroup, consisting now of 2 computers and 1 printer)
i'm comfortable enough with installing the wireless, and we're gonna WPA it until we're confident the private data is secured - but beyond ensuring there are strong passwords on all the network shares, is there anything else we can do to ensure security ? being only a small business, they're not concerned with massive security measures to fend off determined hackers - just enough to prevent a customer or member of staff from "accidentally" stealing, modifying or erasing important data.