Sounds like what you need is a guest network.  Your friend can probably
cobble something together with multiple home office routers (Linksys,
Neatgear, etc.) wired back-to-back but a better, although pricier, solution
is a purpose-built security appliance like the Juniper SSG-5.  Your friend
can define security "zones" and designate certain ports as able to access
the Internet, but nothing else, while other zones can access local servers,
printers, whatever.  A good solution would be to buy a second hydra printer
and put it in the "guest" zone.  That way the realty office users can access
the Internet, their local storage or apps, and a printer/scanner/fax while
the guests have their own access to the Internet and dedicated
printer/scanner/fax.  The SSG-5 is wireless which and can support multiple
SSIDs (WiFi networks) -- like an SSID for the realty users and a different
one for the guests.  

It has lots of features they'll never need like Internet routing protocols
and IPv6 and IPSEC, but the point is it's a full featured wireless security
appliance.  I did a quick search and found one on eBay for $800 and one at a
place called "Virtual Armor" for $365.  It would be a good idea to add on
the $65 one-time charge for next day support.

http://www.virtualarmor.com/products/firewall_ipsec_vpn/wireless_office/ssg5
w_128mb.html 
I don't know anything about this vendor but they are listed as a Juniper
partner.  Like I said, pricier than Linksys, but then you won't find a
Linksys router installed in a Boeing or Citibank network.  You WILL find
Juniper all over the big New York financials, DoD, etc.

There could be other, cheaper solutions, but whatever your buddy picks
should probably be something like the SSG-5.
-Mike

__________________ 
Michel David Lowe 



> -----Original Message-----
> From: Computer Guys Discussion List [mailto:COMPUTERGUYS-
> [EMAIL PROTECTED] On Behalf Of Fred Holmes
> Sent: Wednesday, April 23, 2008 3:23 PM
> To: [email protected]
> Subject: [CGUYS] Collocated "business support" (a la Kinko's, etc.) with
an existing
> real estate office
> 
> I have an acquaintance who owns a real estate office in a small town in
Pennsylvania.
> The spot is upscale vacation homes, and a lot of the residents/visitors
want to use the
>    snip <


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