On Thu, 02 Jun 2005 07:00:27 GMT, "George"
<look@signature_to_reply.com> wrote:
>Thank you, Jeff. Good stuff. I'll follow your leads.
>George
I forgot to mention the "dark side" of hot spot ownership. I've had
to deal with each of these. All are major time wasters.
1. Viruses, Trojans, and worms. Customers arrive with worm or Trojan
infected machines that try to attack the other customers or monopolize
all the bandwidth.
2. File sharing and Bittorrent. These are capable of monopolizing
all your bandwidth. Same with users that go to free hot spots to
download huge updates from Microsloth and others. Some form of
bandwidth management is a must.
3. Spammers. These usually sit outside in a van with direction
antennas and use your hot spot to spew their junk to the world. I
identified one of them and nearly got run over for my trouble. Local
District Attorney wouldn't prosecute without a positive ID.
Monitoring traffic on port 25 for abuse with Snort is a good idea.
4. Campers. These are people that sit for 8+ hours per day, sipping
one cup of coffee, and surfing. The unwritten rule is that users of
the wireless must buy something, but most do not. When confronted,
they usually get irate and mumble something about having bought
something a few days ago. I don't think you'll have the problem in a
restaurant, but it's serious in a coffee shop. Also, note that many
gargantuan laptops will occupy the equivalent table space of several
customers. Don't assume you're immune because the customer is paying.
Monthly plans are flat rate. Several local hot spots turn off the
wireless at 6PM to discourage campers.
5. Neighbors. Many residents in the neighborhood believe that they
can get free broadband service by simply installing a big directional
antenna and using your bandwidth. With for pay wireless hotspot
service, they may actually obtain an account. I've found it best to
identify the culprits and cut a deal with them. In two cases, I have
them helping to police and monitor the system in trade for bandwidth.
6. Tech support. Whenever the system hiccups, everyone seems to
drift towards the cashier or hostess to ask "is the system down"?
Having someone waste time checking the wireless is a big time burner.
I went to one establishment that added "tech support" to the posted
menu.
[Drivel: I've been tempted to design an automatic ping probe box with
big lights to indicate if the wireless is up, down, or constipated.
Maybe a moving graph display with the network traffic in/out
displayed. Yet another product idea. Will they ever end?]
7. Slip and spill. Some customers seem to think the proprietor is
responsible for their clumsiness. Coffee in the keyboard and dropping
the laptop are two I've seen. To the best of my knowledge, nobody has
been sued, but there have been attempts by customer to recover repair
and replacement costs on the grounds that the coffee shop did not
provide adequate protection against their stupidity.
8. 802.11 phones. These are not too common but I predict will be
epidemic shortly. They act exactly like a cell phone, but use 802.11
wireless and VoIP instead. The users act exactly like the standard
variety cell phone users and yell into the phones disrupting everyone.
It's worse with 802.11 because the shared bandwidth is not guaranteed
resulting in frequent dropouts, which inevitably inspires more yelling
into the phone. At this time, the laptop users have Skype and other
VoIP service that used with a headset and a laptop. These generally
do NOT create rude customers because the side tone (earphone audio) is
sufficiently load that the user is not induced to yell. However, the
VoIP phones are apparently designed by the same [insert appropriate
expletive] that designs cell phones with insufficient side tone,
resulting in the inevitable yelling customer. Be prepared to have
your establishment turned into a giant, multi-abuser telephone booth.
9. Interference. On problem with mall's is that everyone seems to
have a hot spot. It's also common for the mall to install wireless,
along with any municipality, government entity, and WISP (wireless
ISP). We have a local mall with such a situation, where I estimate a
density of about 5 access points per acre (200x200ft). On large
department store has some rediculous number of access points to cover
their floor space, that generates most of their own interference.
Some nit wit installed several wireless repeaters that generate even
more intereference. I strongly suggest you do a site survey to see
what's already there before installing.
10. Microwave ovens. Microwave ovens and 802.11 do not mix well.
Restraunts and coffee shops use microwave ovens. It's always fun to
sit in a coffee shop and hear all the laptop users utter a collective
groan as someone nukes their meal. One coffee shop intentionally
heats a glass of water when a noisy VoIP user needs a clue. Keeping
the door seals clean, and proper location are a big help, but the
interference never seems to go away completely.
Now, do you still wanna setup a hot spot?
--
Jeff Liebermann
(E-Mail Removed)
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 AE6KS 831-336-2558