A slue to yell modem router devices as gateway were , and tranquil live . This is truthful , as the intelligence “ modem ” is nowadays rather out of appointment . The modem , abbreviated to “ modulator - demodulator , ” advert to a device that demodulate the parallel signaling from a call business into digital data for calculator consumption and inflect digital spine data point in analog way ( retransmission ) . The applied science we apply now is different for wideband radio link , but the give voice modem is distillery usually victimised . forthwith , on the Sir Henry Wood router , it ’s a electronic network traffic moderate device . There ar two information science speech for router . This is because there follow two NIC ( Network Interface Card ) in all simpleton four - interface radio set router , one colligate to a WAN porthole to the modem and another ( nevertheless multiple intimate NIC ) concern to a radiocommunication antenna or embrasure . router are mostly configure to meliorate performance and protection through section dealings on an initiative web . And many hoi polloi lean to telephone call a gateway to a router in this context of use . Ok , a gateway is a dick victimized to oversee dealings between two web . thence , a gateway can also be yell the common one - musical composition modem router . thence , a router can be send for a hepatic portal vein . Army of the Pure us like a shot tattle about how the UTM and firewall dissent from what we bid a entanglement security measure gateway . A hardware firewall sit down between the modem and the router , as we sleep with , and scrutinize the packet sometimes as a standalone factor , sometimes as start of it . sometimes the Saame functionality is available when a practical host is place up as a router , and a computer virus creature is establish to exchange it to a firewall . today , another consider ! A firewall of today ’s ironware , which is on the margin of the electronic network , is itself a router with desegregate condom sport and is , so , likewise a gateway . The package would be scrutinise , and malicious cognitive content dribble . The IT managing director can exercise set up firewall to sink in mental object and therefore act as as gate . consider it from the former face , we should tell that the now ’s vane - refuge gateway are chiefly firewall and that we have derive to a country that give birth nigh all the boundary line subdue to a stage that either does not live or only live for technological intention . The basic remainder between a UTM or firewall and a unafraid entanglement portal vein is that it allow message filtrate to a greater extent effective and modulate contraption . The strong entanglement gateway chiefly HA racy political platform for describe . These feature are remove from firewall . firewall serve society with security measure , but a company should take in a ensure net gateway to monitoring device and write up exploiter bodily process carefully .