Sophos states this in there KB.
"ARP Hardening If enabled, the device will send an ARP reply only if the destination IP address is a local address configured on the incoming interface and both the sender and destination IP address are in the same subnet."
I am debating if I need this on or not. So I have two questions.
1. The statement "...same subnet", does this mean a /8 subnet or the subnet setup on the port?
2. What are the pros/cons on enabling this?
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