on a network
that serves as an entrance to another network. In enterprises, the gateway is the computer that routes
the traffic from a workstation
to the outside network that is serving the Web pages. In homes, the gateway is the ISP
that connects the user to the internet.
In enterprises, the gateway node often acts as a proxy server
and a firewall
. The gateway is also associated with both a router
, which use headers
and forwarding tables to determine where packets
are sent, and a switch
, which provides the actual path for the packet in and out of the gateway.