Trying to use a Security policy with type intrazone and action is Deny (any application & service).
Target is to block all communication within the same zone (subnet). Such as ping, file share (smb), ftp, etc.
The layer3 interface and the computers were connected to a unmanaged switch.
But the outcome is only the gateway (layer3 interface) cannot be contact. All the computers can still comunicate with each other.
You could segregate traffic within the same subnet using L2 or vwire interfaces and inspect the traffic using intra-zone rules.
This seems impractical. I'll have huge workload to assign each computer to has its own L2 interface.
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