in black and white
Main menu
Home About us Share a book
Biology Business Chemistry Computers Culture Economics Fiction Games Guide History Management Mathematical Medicine Mental Fitnes Physics Psychology Scince Sport Technics

wireles network hacks mods - briere D.

briere D. wireles network hacks mods - Wiley publishing, 2005. - 387 p.
ISBN: 0-7645-9583-0
Download (direct link): wirelesnetworkhacks.pdf
Previous << 1 .. 29 30 31 32 33 34 < 35 > 36 37 38 39 40 41 .. 87 >> Next

Availability: Most phone companies have extended their networks enough so that 80 to 90 percent of their customers can get DSL service. The unlucky 10 to 20 percent are typically in rural areas or somehow geographically situated too far from their local phone company’s central office to get DSL.
Networkability: We just made this word up, but we like it. It refers to how amenable your broadband service is to serving a network of computers and devices. DSL is indeed well-suited to supplying a network with an Internet connection. The biggest issue is that many consumer-grade DSL connections require you to use PPPoE to establish a connection, meaning you’ll need to make sure your router supports PPPoE. You can find premium DSL connections that eliminate the PPPoE and may offer fixed IP addresses.
If your DSL provider tries to give you a modem with a USB connection, avoid it like the plague. These are almost impossible to incorporate into a wireless network. Make sure your modem has an Ethernet connection (most do, and you can almost always get one if you ask).
Chapter 4: Wi-Fi and Broadband Connections
When it comes down to actually getting DSL service, the picture gets a little muddy. That’s because there are two entities involved in DSL:
^ The DSL access provider who owns and operates the DSL equipment, and who owns or leases the copper phone lines over which the DSL runs.
^ The ISP who uses this DSL equipment and who provides the actual connection to the Internet, as well as services like e-mail.
In many cases, these two entities are simply separate elements of the same company — the local incumbent telephone company. That’s how most people get their DSL service, and it can work very well.
You can also get DSL directly from an independent ISP (like EarthLink or Speakeasy — find them at and, respectively) and let them deal with the DSL access provider for you. Or you can find an independent DSL access provider (like Covad —, that leases lines from the local phone company and installs its own DSL equipment.
Using the tools we discussed earlier in the chapter (like Broadband Reports), you can find availability, pricing, and service information for any of these types of DSL providers.
Fiber comes home
For a really fast pipe into your wireless network, you can hope to be one of the lucky few to get your broadband connection over fiber optic cables. These connections use light beams to carry Internet traffic (and video and voice signals too!) at speeds potentially hundreds of times faster than cable or DSL.
FTTH (or Fiber to the Home) is a service that replaces copper phone lines with glass fiber optic cables that are capable of speeds of up to 1 Gigabit per second (Gbps) — a thousand Mbps! Most FTTH networks use a system called PON, or passive optical network, which shares this connection between 16 or even 32 users. That means the actual connection speed to any single user is less than 1 Gbps — but it's still fast
as can be, and can support not just high-speed Internet, but also multiple voice connections and digital TV services.
A lot of small developments, municipalities, and telephone companies throughout the U.S. and Canada are beginning to offer FTTH services. If yours is, well, don't wait on us tell you: Get signed up!
The really big news is that the two largest local telephone companies in the U.S. — Verizon and SBC — have both made commitments to begin deploying FTTH services in their territories. This is a truly big deal for anyone who lives in the Northeast or Southwest (these company's primary service areas), and who has a wireless network that they want to connect to the Internet.
66 Part I: Making Your World Wireless
If you’re planning on doing some serious Internet stuff with your wireless LAN — like heavy-duty gaming, file sharing, hot spot operation, and so on — check out one of the independent DSL providers or ISPs. We like Covad and Speakeasy (they often work together). They are more likely to give you a fixed IP address and less likely to stop you from doing what you want to do (like run a server) on your network.
Cable moves with wireless
The other popular source of broadband connections comes via cable modem services offered by local cable MSOs (or Multiple Systems Operators). These MSOs (your friends at the cable company, in other words) have spent billions upon billions of dollars upgrading their networks to support new generations of services.
Specifically, they have upgraded their networks to something called a twoway HFC (Hybrid Fiber Coax) network. This means that cable networks are now designed to carry data in both directions, upstream and down (which is what “two-way” refers to), over a mixture (or hybrid) of fiber optic and coaxial cables. (These are the typical cable TV cables you have coming out of your walls.) With the addition of a cable modem somewhere in your home, you can get your network online via a high-speed cable connection.
Previous << 1 .. 29 30 31 32 33 34 < 35 > 36 37 38 39 40 41 .. 87 >> Next