proxy Address Resolution Protocol. Variation of the ARP protocol in which an intermediate device (for example, a router) sends an ARP response on behalf of an end node to the requesting host. Proxy ARP can lessen bandwidth use on slow-speed WAN links. See also ARP.
The function of a router sending an Address Resolution Protocol (ARP) response to a host which does not know how to use a router, and that pretends to be a remote target host.
A technique employed by routers to obtain IP datagrams for forwarding. The router answers ARP requests for non local IP address with its own hardware address, ensuring that all datagrams for that IP address will be sent to the router.
The technique in which one machine, usually a router, answers ARP requests intended for another machine. By "faking" its identity, the router accepts responsibility for routing packets to the "real" destination. Proxy ARP allows a site to use a single IP address with two physical networks. Subnetting would normally be a better solution. See also: Address Resolution Protocol [Source: RFC1208
The technique in which one machine, usually a router, answers ARP requests intended for another by supplying its own physical address. By pretending to be another machine, the router accepts responsibility for routing packets to it. The purpose of proxy ARP is to allow a site to use a single IP network address with multiple physical networks.
Proxy Address Resolution Protocol allows a network to use one network address across two physical interfaces. In typical routing, separate network interfaces on a routing device must connect to different networks with distinct IP addresses (e.g., 192.168.10.n and 192.168.11.n). Thus, adding a firewall appliance that has multiple interfaces could potentially force a network to be subdivided into separate network addresses (because although a firewall appliance is not a router, it performs routing). Proxy ARP is the answer for administrators who do not want to renumber their network. See also Address Resolution Protocol.
Proxy ARP is a technique for using the ARP protocol to provide an ad hoc routing mechanism.