5.2 : Understand securing modems (5.2.4 : Explain the reason for modem…
5.2 : Understand securing modems
5.2.1 : Define securing modems
Securing modem is a hardware component that allows a computer or other device, such as a router or switch, to connect to the Internet and make sure remain safe and unthreatened by unauthorized users. It will be helpful being protected the network and devices to transmitting digital information through communication channel in long distance from danger or loss.
5.2.2 : Identify types of modems
A modem that fits inside of a computer and can be powered on computer's own power supply
A modem that similar to internal modem and allows access to internet. the external modem sits outside the computer and it is unable for fit inside the computer. the modem typically connects to the computer via a serial, wireless or USB cable. and is usually powered on by external source.
(Wireless modem and USB Modem)
5.2.3 : Explain network attacks and risks involve in modems
Shared nature of cable connections :
all subscribers in local area can shared the same subnet when the connecting with cable modem. it is easy to launch attacks against the system by the hackers or unauthorized users.
: users make more attractive by the speed of network and allows the intruder to quickly deposit trojan horses, hacker toolkits and sensitive documents
Hackers can launch
against targeted network resources or the entire network. The DoS attacks include service overloading, message flooding, signal grounding ,
For more info,
5.2.4 : Explain the reason for modem failures
A modem which is reset
The power supply is interrupted
The Synchronization process (using break signals) is disabled while the SB is ON.
Hacked by unauthorized users
Drivers aren't up to date
Modem or phone line aren't stable at high connect speeds.
Modem is degrading
Signal from the cable outlet