Configuring Proxy ARP on SRX-series Services Gateways

On SRX-series devices, you use NAT proxy ARP functionality to configure proxy ARP entries for IP addresses that require either source or destination NAT and that are in the same subnet as the ingress interface.

Note: On SRX-series devices, you must explicitly configure NAT proxy ARP.

When configuring NAT proxy ARP, you must specify the interface on which to configure proxy ARP. It should be the logical interface. Then you enter an address or address range.

The device performs proxy ARP for the following conditions:

• When addresses defined in the static NAT and source NAT pool are in the same subnet as that of the ingress interface
• When addresses in the original destination address entry in the destination NAT rules are in the same subnet as that of the ingress interface