A cable modem provides bi-directional data communication over radio frequency channels on a hybrid fiber-coaxial or radio frequency over glass infrastructure to deliver broadband internet access via cable. It is a type of network bridge and modem commonly used in Australia, Europe, and North and South America to transmit data over a shared medium where all cable modems share bandwidth. Popular cable modem brands include Com21, Motorola, Bay Networks, RCA, Cisco, Toshiba, 3Com, and Terayon.

1. CABLE MODEM
Network Security

2. Overview
 A cable modem is a type of network
bridge and modem that provides bi-directional data
communication via radio frequency channels on
a HFC (Hybrid Fibre Coaxial) and RFoG (Radio Frequency over
Glass) infrastructure.
 Cable modems are primarily used to deliver broadband
Internet access in the form of cable Internet at
high bandwidth
 They are commonly deployed in Australia, Europe,
and North and South America
Network Security

3. Overview
 A Cable Modem is a digital modem used
for the data transmission
 Cable modems use a shared networking
technology where all the cable modems
share a single medium i.e. shared
bandwidth
 Types: Com21, Motorola, Bay Networks,
RCA, Cisco, Toshiba, 3Com, and
Terayon
Network Security

4. Things to do
 Limitations of Cable modem
 Architecture of an cable modem
 ADSL Vs Cable Modem
Network Security