Proxy Arp - D-Link DFL-1600 User Manual

94 Chapter 10. Routing
10.8

Proxy ARP

Proxy ARP is the process in which one system responds to the ARP
request for another system. For example, host A sends an ARP request to
resolve the IP address of host B. Instead of Host B, the firewall responds to
this ARP request.
In essence, Proxy ARP has the same functionality as ARP publish (See 9.6
ARP)
The biggest difference here is that you can, in a simple manner, publish
entire networks on one or more interfaces at the same time. Another,
slightly less significant difference is that the firewall always publishes the
addresses as belonging to the firewall itself; it is therefore not possible to
publish addresses belonging to other hardware addresses.
Note
It is only possible to Proxy ARP on a Ethernet and VLAN interfaces.
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