Network Gateway
In computer network, a network gateway is a device/software which acts as a gate between intranet/internet. Any piece of information that is on the internet and you want to access them without passing through the Network gateway you will not be able to access them.
Like the name gateway - It is like a gate in your room where without opening your gate you cannot access/reach outside world.
A network gateway can be a router/L3 Switch/Proxy Software/Firewall.
When you assign gateway IP to a desktop/server you must confirm that from your desktop/server you are able to reach the gateway using ping.
