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Although I'm generally obsessed with technology, the concept
of wireless never did much for me. My cell phone was the
extent of my wireless world, and I was completely content
to be tied down to a desktop.
That all changed a few weeks ago, when I.T. replaced
my desktop with a notebook. I took it with me to a deposition,
intending to take notes. As the deposition started,
a small box popped up on my computer screen: "You
are Now Connected to the Wireless Network." I was
mesmerized; I had completely forgotten the laptop was
equipped with a wireless adapter. Fortunately, the firm's
wireless network was protected by appropriate security
measures -- otherwise, I could easily have wasted the
entire deposition surfing the Internet. The experience
caused me to rethink my ambivalence to wireless, and
so I decided to have some fun by connecting my own home
wireless network.
I decided that for now, I would hook up a wireless
Internet connection, which would allow me to conduct
Internet research for articles in any part of the house.
The idea of surfing the Internet in the den or on the
patio, instead of my office, really appealed to me.
I chose not to enable file sharing between the notebook
and my PC -- I don't really need the feature, and I
did not want to be worried about the extra security
concerns.
Learning about the technology involved in wireless
networks took up the most time -- I spent a few days
doing research on the Internet. First, I had to decide
the standard for my wireless LAN, or Local Area Network.
The family of specifications developed for wireless
LANs is called 802.11, and there are three members of
this family: a, b, and g. The oldest and most widespread
standard is 802.11b; it transfers data over the network
at speeds of up to 11 megabytes per second, has a range
of about 150 feet, and is relatively inexpensive. It
operates at the 2.4GHz frequency level, which is an
"unregulated" range -- this means the standard
occupies frequencies also used by other commercial wireless
products, which can lead to interference from these
devices. The successor to 802.11b is 802.11a, which
is capable of transfer speeds of 54 megabytes per second.
The "a" standard works at the 5GHz frequency,
which is "regulated" and subject to less interference.
It's also more expensive than the "b" solutions.
The newcomer to the wireless scene is 802.11g, which
operates on the same frequency as 802.11b, but at much
faster speeds. After researching the options, I chose
the 802.11g standard for my wireless network. It offers
a fast solution at a reasonable price.
Next up: the hardware. At home, I only needed to connect
my PC and notebook, so my decision was relatively easy.
The first thing I needed was a router, to serve as a
gateway between my Internet connection and my soon-to-be
network. In order to access the Internet from my notebook,
I also needed a wireless access point, which is the
focus for all data flowing between my PC and the notebook.
Fortunately, most routers come installed with a wireless
access point built in, and the prices for these routers
are not bad -- $75-$150 will purchase a good quality
product. The only other item I needed was an adapter
for my laptop, which you know by now came pre-installed
with the wireless card. That's all I needed. If you
have more than one computer you want to connect to the
wireless network, you'll want to purchase an adapter
for each computer, or perhaps a "hub," which
allows you to extend your network to multiple PCs.
Before buying the router, however, I needed to consider
the issue of security. Wireless networks have proven
easily susceptible to attack, and the best wireless
products these days offer increasingly effective levels
of security. I looked for a router with a NAT (Network
Address Translation) firewall, which hides the network
behind the router; it should also have SPI (Stateful
Packet Inspection), to assist in filtering information
through the firewall. If the hardware comes equipped
with MAC (Media Access Control) Filtering, you can grant
or deny access to specific machines. But that's not
enough. Your wireless equipment should also come equipped
with encryption. The two most common types of encryption
standards are WEP (Wired Equivalent Privacy), and WPA
(Wi-Fi Protected Access). Both standards require entering
an encryption key for access.
After all this research, the rest of the process was
a breeze. I found a router/wireless access point for
under $150 and brought it home. After connecting the
router to my DSL modem and my PC, I adjusted the configuration
through a browser-based interface. With one click of
a button, I was wirelessly surfing the Internet on my
notebook. And it took just fifteen minutes -- give or
take.
Top
Tom Mighell is an attorney with Cowles
& Thompson in Dallas, Texas. He is a frequent
speaker on the Internet and personal technology, and
provides consulting on personal technology issues.
He is the publisher of the Internet Legal Research
Weekly, which can be found on his weblog, Inter
Alia, at www.inter-alia.net.
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