Ethical Hacking
How to Hack WiFi (Wireless) Network
Wireless networks are accessible to anyone within the router’s transmission radius. This makes...
A modem (modulator-demodulator) is a device that modulates an analog signal to digital information. It also decodes carrier signals to demodulates the transmitted information.
The main aim of the modem is to produce a signal that can be transmitted easily and decoded to reproduce the digital data in its original form. Modems are also used for transmitting analog signals, from Light Emitting Diodes (LED) to radio.
In this difference tutorial, you will learn:
Routers are computer networking devices that serve two primary functions: (1) create and maintain a local area network and (2) manage the data entering and leaving the network as well as data moving inside of the network.
It also helps you to handle multiple networks and routes network traffic between them.
In your home network, your router has one connection to the Internet and one connection to your private local network. Moreover, most routers also contain built-in switches that allow you to connect multiple wired devices.
Dial-up Modem: This type of modem are using the analog telephone line to connect two end devices like two personal computer. It offers an interface between the digital system and an analog system. It modulates the binary data into the carrier signal on the telephone line.
DSL Modem: DSL model uses twisted pair cable for transmission of signals. It will radiate at higher frequencies and covered more distance than the dial-up modems. It offers to speed up to 2 Mbps and even more, which depends upon the type and configuration.
Cable Modem: This type of modem is designed in a way to carry radio and television signals. It can be configured internally/ externally with the television line to convert the signals into the compatible mode.
Mobile broadband Modems: This type of modem makes use of mobile telephone lines such as GRPS, Wi-Max, UMTS,etc. It is also called wireless modems. They are built-in in a PC or a laptop. They can also be inserted inside the USB port for internet access.
Half Duplex Modem: This type of modem allows you to transmit a signal in one direction at one time. So, if the modem is receiving the incoming signal, then it displays indication light to the sending point to stop transmitting data till the time it completes the process of receiving signals.
Full Duplex Modem: This type of modem permits transmission in both directions at the same interval of time. These types of modems have two carriers on the line.
Four Wire Modem: It is a separate pair of wires that is used for the incoming and outgoing carrier. Therefore, the same frequency can be used for transmission at both ends.
Two-Wire Modem: This type of modem uses a pair of wires for both incoming and outgoing carriers. However, if we are using the half-duplex mode, then the same frequency can be used for transmission as data flows in the same direction only at a time.
Here, are widely used Router types:
Wireless Router:
A wireless router combines multiple base stations (wireless access point) as well as a number of wired LAN switch.
Modem Router:
Modem router helps to connect more than one computer to a single DSL line for Internet access. This type of routers provides the Network Address Translation (NAT), which is required to support several computers.
A Bridge Router:
Brouter is a network device that works as a bridge and as a router. This router allows interfaces with an ATM (Asynchronous Transfer Mode) network.
Distribution Router:
Distribution routers aggregate traffic from multiple access routers, which is used for enforcing quality of service across a WAN.
Core router:
A core router is a router designed to operate in the Internet backbone, or core.
Function to be performed at the transmitting end:
Function to be performed at the receiving end:
The modem connects with ISP that offers either cable or DSL Internet service. These copper wires travel from your property to a neighborhood node, and to your service provider, which may be several miles away. The device sends and receives an electrical signal with the help of wires, using a few MHz.
A router connects multiple networks and tracks network traffic between them. It has one connection to the internet and one connection to your private local network.
Moreover, many routers also contain built-in switches that allow you to connect multiple wired devices. Many routers also contain wireless radios that let you connect Wi-Fi devices.
Here, are the differences between Modem and Router
Modem | Router |
A Modem modulates and demodulates signals. | The router is a networking device that allows you to associate various networks with each other for LAN and WAN networks. |
It is used for accessing the internet as it connects your computer to the ISP. | You can access the internet without the need for a modem. |
The modem operates on the Datalink layer. | Router can be operated at the Data Link Layer, Network Layer, and Physical Layer. |
The modem does not help to examine the data packet. Therefore, the security threat is always there. | Router examines all data packet before forwarding it, that helps to identify a threat. |
It is placed between a telephone line and a router or directly to the computer. | It is placed between a computer network and modem. |
Here, are pros/advantage of Modem:
Here, are some drawbacks/cons of Modem:
Here, are some advantages of Router:
Here, are cons/drawback of Router:
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