How Stuff Works: Cable Modems - Illustrated tutorial on the inner workings of cable modems w/links. CableSense - Simple tutorials for sharing an Internet connection, speed tweaking and networking. What Is A Cable Modem - Detailed definition from WhatIs.com. Mac Cable and DSL Security - Cable and DSL Connections and Security Measures Broadband Exchange - A resource for High Speed Internet users including Cable Modem users. OOL - Optimum Online - Optimize your cable modem step by step for optimal performance. ePlace Cable, DSL - Provide security, firewall with a proxy to share cable, DSL, and other high-speed connections.