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  2. Gateway (telecommunications) - Wikipedia

    en.wikipedia.org/wiki/Gateway_(telecommunications)

    A gateway is a piece of networking hardware or software used in telecommunications networks that allows data to flow from one discrete network to another. Gateways are distinct from routers or switches in that they communicate using more than one protocol to connect multiple networks [1][2] and can operate at any of the seven layers of the OSI ...

  3. Gateway address - Wikipedia

    en.wikipedia.org/wiki/Gateway_address

    Gateway address. The gateway address (or default gateway) is a router interface connected to the local network that sends packets out of the local network. The gateway has a physical and a logical address.

  4. Default gateway - Wikipedia

    en.wikipedia.org/wiki/Default_gateway

    In a home or small office environment, the default gateway is a device, such as a DSL router or cable router, that connects the local network to the Internet. It serves as the default gateway for all network devices. Enterprise network systems may require many internal network segments. A device wishing to communicate with a host on the public ...

  5. Residential gateway - Wikipedia

    en.wikipedia.org/wiki/Residential_gateway

    A residential gateway is a small consumer-grade gateway which bridges network access between connected local area network (LAN) hosts to a wide area network (WAN) (such as the Internet) via a modem, or directly connects to a WAN (as in EttH), while routing. The WAN is a larger computer network, generally operated by an Internet service provider.

  6. Proxy server - Wikipedia

    en.wikipedia.org/wiki/Proxy_server

    Proxy server. Communication between two computers connected through a third computer acting as a proxy server. This can protect Alice's privacy, as Bob only knows about the proxy and cannot identify or contact Alice directly. In computer networking, a proxy server is a server application that acts as an intermediary between a client requesting ...

  7. Network address translation - Wikipedia

    en.wikipedia.org/wiki/Network_address_translation

    Network address translation. Network address translation (NAT) is a method of mapping an IP address space into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing device. [1] The technique was originally used to bypass the need to assign a new address to every host when ...

  8. Application-level gateway - Wikipedia

    en.wikipedia.org/wiki/Application-level_gateway

    An application-level gateway (ALG, also known as application-layer gateway, application gateway, application proxy, or application-level proxy) is a security component that augments a firewall or NAT employed in a mobile network. [1][2] It allows customized NAT traversal filters to be plugged into the gateway to support address and port ...

  9. Wireless gateway - Wikipedia

    en.wikipedia.org/wiki/Wireless_gateway

    A wireless gateway routes packets from a wireless LAN to another network, wired or wireless WAN. It may be implemented as software or hardware or a combination of both. Wireless gateways combine the functions of a wireless access point, a router, and often provide firewall functions as well. They provide network address translation (NAT ...

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