Gateways are devices that allow a computer to connect to another computer or a network. Gateways are an access point to a network and enable the exchange of data between different devices. Gateways can be used to connect two networks with different protocols, or to enable the connection between devices using different types of connectivity. Gateways can also be used to secure a network, filter traffic and prevent unwanted connections. Gateways are an essential part of many computer networks, and can be used to facilitate a variety of different tasks.