(Page 1 of 2)
Modems allow users to use telephone lines to call in to a network, computer, or fax machine from a remote location. Most modems today use the V.90 standard, theoretically communicating at up to 56kb/sec, although they are limited to 53kb/sec (kilobits per second) by the telephone network. Older modems may communicate at 33.6kb/sec, 28.8kb/sec, 14.4kb/sec, or even 9600bits/sec or slower. Other devices that connect a home PC with a cable Internet connection or DSL connection are often referred to as cable modems or DSL modems, but they more closely resemble routers than modems in the traditional sense. And these have issues as well beyond what you may typically think 275 Employees working at home, providing after-hours support, exchanging data among business partners, sending and receiving faxes, and accessing the network from off-site company locations that do not have permanent network connections, use modems in corporate settings most commonly for telecommuting.
Modems can be internal (on cards which plug into a PC or laptop) or external (separate boxes outside the computer). External modems typically connect to computers via serial or USB connections.
In the case of a serial connection, and probably also for USB, a tap can be inserted between the computer and modem, so that communications can be intercepted and recorded, compromising data privacy. For that matter, an appropriate device between computer and modem could even take over the conversation.
Home - Table Of Contents - Contact Us
CertiGuide for Security+ (http://www.CertiGuide.com/secplus/) on CertiGuide.com
Version 1.0 - Version Date: November 15, 2004
Adapted with permission from a work created by Tcat Houser et al.
CertiGuide.com Version © Copyright 2004 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.