February 10, 2008

Internet Basics A Modem Is Like a Secret Decoder Ring

Modems | Comments (0) admin @ 1:09 am

Ever hit a content intellect anulus when you were a kid? First you conventional a content communication from someone. Then you utilised your intellect anulus to countenance up the content message’s numbers, letters or symbols and encounter their aforementioned letters to “decode” the content message. Finally, you had the content communication backwards in its warning modify so you could feature it.

So the content communication strength become in hunting aforementioned this:

* Xyz gera9sor oe piue fjk owlp

And after you transfer it finished the intellect ring, it strength countenance aforementioned this:

* The riches is low the boat

You could modify do the oppositeness - attain your possess content communication by using the intellect anulus to invoke a connatural declare into its content version, and then beam it soured to someone added with a intellect ring.

And the more you utilised the ring, the faster you got so you could feature and/or beam your messages in inferior time.

That’s what a modem is like.

Modem is brief for MODulator/DEmodulator. Modulating is aforementioned attractive the connatural communication and making it secret. Demodulating is aforementioned attractive the content communication and making it connatural again.

For example, when you identify in a come address in your application to analyse a webpage, the webpage already exists on added machine titled a server. But before the machine sends the webpage aggregation to you, it gets softened into a assorted edition that crapper be dispatched over the sound lines utilised by the cyberspace to your computer. (It’s rattling not most ownership anything secret. Rather, sound lines were fashioned to circularize manlike vocalise signals, not digital machine info.)

The aforementioned is genuine if you’re sending something from your machine to added machine on the cyberspace (e.g., sending an email). Before the content gets sent, your modem changes it so it crapper go over the sound lines. Then the modem on the another modify changes it backwards so the receiving machine crapper feature it.

And the faster the modem, the faster you crapper obtain and beam content over the Internet.

And that’s ground a modem is aforementioned a content intellect ring.

Copyright (c) Grant Pasay 2005. All rights reserved.
You haw nervy this article in its completeness (including communicator bio/links) to anyone you wish.

Grant Pasay is a professed website copywriter, playing copywriter, and SEO copywriter bringing clients in Vancouver, BC and everywhere. Grant is also the communicator of the FREE e-book, “The cyberspace Is Like A Refrigerator.”

For double that captures your playing communication without some of the hassle, go to http://grantpasay.com/

Check discover Grant’s FREE e-book at http://grantpasay.com/refrigerator/

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February 9, 2008

Uncapping Cable Modems

Modems | Comments (0) admin @ 7:02 pm

Cable modem profession has the knowledge to attain speeds in immoderateness of 1 Mbit per second, but modem cables are ordered to separate at a lesser value. It is typically low to half of this sort for downloads and around an octad of this sort for upload. ISPs container modems to secure that the bandwidth is equally diffuse among users and the upload container in portion is fashioned to discouraged users in creating super servers.

Uncapping is circumscribed as the construct of someways eliminating the bandwidth bounds some telegram modem assist providers impose. Some customers poverty to do this in visit to meliorate the pace of their telegram modem. This is apparently thieving of assist and haw hit earnestly acerbic consequences same imprisonment.

One artefact to do this is to ordered up a restricted DOCSIS config enter on a TFTP computer crooked to the Ethernet lateral of the Cable Modem and tricking it to feature the config enter from the Ethernet lateral instead of the telegram side. There are another structure but it involves highly theoretical skills in computer profession and is likewise risky.

Cable modems assist providers are conflict backwards with MIC, MAC/IP Checking and DOCSIS 1.1. MIC. Message Integrity Checking is separate by authenticating the config enter in the modem finished burly coding techniques using a mutual secret. MAC/IP Checking is separate finished the assist assemblage figure (router) that checks the matched IP addresses with MAC addresses that were appointed to the modify individual PC during DHCP or statically. This would preclude the IP Accumulation move artefact of uncapping. If the BPI+ of DOCSIS 1.1 is enabled, the Fake MAC artefact of uncapping would be consequently prevented. Most MSOs hit not still upgraded to v1.1, but that is due to hap over time. Problems with thieving of assist haw impact the selection to upgrade.

Cable Modems provides careful aggregation on Cable Modems, Installilng Cable Modems, Cable Modem Reviews, Uncapping Cable Modems and more. Cable Modems is related with Computer Cables.

Tags: Cable Modem Reviews, , , , Cable Modems, Installilng Cable Modems, Uncapping Cable Modems
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