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What Is A Gateway

 

A GATEWAY IS A NETWORK NODE THAT CONNECTS TWO NETWORKS WITH DIFFERENT TRANSMISSION PROTOCOLS. IT SERVES AS AN ENTRY AND EXIT POINT FOR A NETWORK, AND ALL DATA MUST PASS THROUGH IT BEFORE MOVING ON.

GATEWAYS ARE OFTEN USED TO CONNECT HOME OR BUSINESS NETWORKS TO THE INTERNET. IN THIS CASE, THE GATEWAY IS USUALLY A ROUTER, WHICH CONNECTS THE LOCAL NETWORK TO THE INTERNET USING A MODEM.

GATEWAYS CAN ALSO BE USED TO CONNECT DIFFERENT TYPES OF NETWORKS WITHIN AN ORGANIZATION, SUCH AS A LOCAL AREA NETWORK (LAN) TO A WIDE AREA NETWORK (WAN). OR, THEY CAN BE USED TO CONNECT NETWORKS WITH DIFFERENT PROTOCOLS, SUCH AS ETHERNET TO TOKEN RING.

GATEWAYS TYPICALLY PERFORM A NUMBER OF FUNCTIONS, INCLUDING:

PROTOCOL CONVERSION:

GATEWAYS CAN CONVERT DATA FROM ONE PROTOCOL TO ANOTHER. FOR EXAMPLE, A GATEWAY THAT CONNECTS A LAN TO THE INTERNET MIGHT CONVERT DATA FROM ETHERNET TO TCP/IP.

ROUTING:

GATEWAYS CAN ROUTE DATA PACKETS TO THEIR DESTINATION. THEY DO THIS BY READING THE DESTINATION ADDRESS IN THE PACKET AND THEN FORWARDING IT TO THE NEXT NETWORK IN THE PATH.

SECURITY:

GATEWAYS CAN ALSO PROVIDE SECURITY FEATURES, SUCH AS FIREWALLS AND INTRUSION DETECTION SYSTEMS. THESE FEATURES CAN HELP TO PROTECT THE NETWORK FROM UNAUTHORIZED ACCESS AND ATTACK.

HERE ARE SOME EXAMPLES OF GATEWAYS:

ROUTERS

FIREWALLS

VPN GATEWAYS

WEB APPLICATION FIREWALLS (WAFS)

CLOUD STORAGE GATEWAYS

API GATEWAYS

IOT GATEWAYS

MEDIA GATEWAYS

EMAIL SECURITY GATEWAYS

VOICE OVER IP (VOIP) GATEWAYS

GATEWAYS ARE AN ESSENTIAL PART OF MODERN NETWORKS, AND THEY PLAY A VITAL ROLE IN ALLOWING US TO COMMUNICATE AND SHARE DATA.

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