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It can allow a direct connection from a home LAN to a WWAN, if a wireless router or access point is present on the WAN as well and tethering is allowed. Many modems now incorporate the features mentioned below and thus are appropriately described as residential gateways, such as some Internet providers which offer a cable modem router combo. [8]
A residential gateway is a networking device used to connect devices in the home to the Internet or other wide area network (WAN). It is an umbrella term, used to cover multi-function networking appliances used in homes, which may combine a DSL modem or cable modem, a network switch, a consumer-grade router, and a wireless access point.
A common example is an ISP point of presence, the local access point that allows users to connect to the Internet with their Internet service provider (ISP). [1] A PoP typically houses servers, routers, network switches, multiplexers, and other network interface equipment, and is typically located in a data center. ISPs typically have multiple ...
Provider Router (P): A Provider router is also called a transit-router, it sits in an MPLS network and is responsible for establishing label-switched paths between the PE routers. [27] Provider edge router (PE): An MPLS-specific router in the network's access layer that interconnects with customer edge routers to provide layer 2 or layer 3 VPN ...
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) functionality, so multiple users can use the internet with a single public IP. [1]
For example, a network gateway connects an office or home intranet to the Internet. If an office or home computer user wants to load a web page, at least two network gateways are accessed—one to get from the office or home network to the Internet and one to get from the Internet to the computer that serves the web page.
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