Sorry if this is really basic but...
I have configuration where, we've added a gateway to a subnet that we only want one host to be able to access to get offsite. The gateway is on the other side of a vwire in the same subnet space obviously but in a different zone on the firewall. We're only allowing inbound connections from a client on the other side of this gateway into the subnet. No hosts in the subnet would be initiating connections to the client.
My question is, since the FW is between the host and it's gateway, do I need a rule for the host inside the network to be able to arp for the gateway through the firewall and vice versa?
Or to make the question more generic I guess, do I need a rule to allow two hosts on the same subnet but separated by a vwire in different zones to be able to arp before a L3 connection gets established?
Thanks in advance.
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