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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. The gateway has a physical and a logical address.
The default gateway can be specified by the route command to configure the node's routing table and default route. 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.
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 model.
A residential gateway usually provides configuration via a web interface, [9] or app on mobile device. routing between the home network and the Internet. connectivity within the home network like a network switch, hub, or WLAN base station. network address translation (NAT), [10] [11] DHCP for IPv4 and IPv6, [12] [11] and; firewall functions [11]
The network with the longest subnet mask or network prefix that matches the destination IP address is the next-hop network gateway. The process repeats until a packet is delivered to the destination host, or earlier along the route, when a router has no default route available and cannot route the packet otherwise.
RFC 2663 uses the term network address and port translation (NAPT) for this type of NAT. [4] Other names include port address translation (PAT), IP masquerading, NAT overload, and many-to-one NAT. This is the most common type of NAT and has become synonymous with the term NAT in common usage.
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A public IP address is a globally routable unicast IP address, meaning that the address is not an address reserved for use in private networks, such as those reserved by RFC 1918, or the various IPv6 address formats of local scope or site-local scope, for example for link-local addressing. Public IP addresses may be used for communication ...