A default gateway is an entry point and exit point in a computer network. In businesses, the gateway is the node (connection point) that routes traffic from one workstation to another segment of the network. The default gateway is used for the connection point connecting the outside networks and internal networks. In homes, the default gateway is the device provided by the ISP such as modem or
. DSL that connects users to the internet. In the routing table, a Default Gateway is the connection point on the network that is chosen when the IP address does not match any routes.