What is Gateway?
A gateway is a connection point that manages traffic between different networks.
Definition and Word Origin
Gate means door, and way means path. It is a bridge that allows two networks to communicate with each other: the device that connects the internet in your home to the outside world is a typical example. It examines incoming data and decides which network it should go to.
How to Know and Use in Daily Life?
Home modem: Connects your home to the provider network.
Corporate gateway: The control point for office traffic.
Cloudy: The gateway between virtual networks.
Technical Depth and Architecture
Functions of the gateway:
Network Address Translation (NAT): Maps internal addresses to a single external address.
Filtering: Keeps unwanted traffic at the door.
Routing: Delivers the packet to the correct network.
The default route information is as follows:
default via 192.168.1.1 dev eth0This line indicates that unrecognized destinations will be sent via the modem. An API gateway, however, is at a different layer: it manages service requests, not network traffic.
Frequently Mixed Things
It can be confused with an API Gateway. An API Gateway manages software services, while a network gateway operates at the network level. One is an application gateway, the other is a routing gateway.
Use in Different Disciplines
Border gateway: Inspection and routing of arrivals.
Port: Customs clearance of ships.
Reception: Directing the visitor to the correct floor.
Questions and answers
Can one access the internet without a gateway?
No. The local network cannot connect to the outside world and remains isolated.
What is the difference from an API gateway?
A network gateway carries packets, while an API gateway manages requests. One is the transport layer, the other is the application layer.
Which one is used at home?
The gateway inside your modem handles this. No additional settings are required, and addresses are distributed automatically.
Can two networks be kept separate?
Yes. By using firewall rules, traffic is blocked, and the networks operate in isolation.
Related terms
Related tools
This explanation was written in plain language for TreScout with AI and machine-translated from the Turkish original · the Turkish version prevails. If something looks wrong or missing, write to hello@trescout.com. Read in Turkish →