SWITCH with 10.14.180.x and 182.x vlans. It connects via its Gig 0/1 port to rest of main network.
On that gig port is the command: ip access-group HIDE in
In the rest of switch config is an ip access- list extended HIDE. With the following:
Permit ip 10.14.180.0 0.0.0.255 any
Permit ip 10.14.182.0 0.0.0.255 any
Deny tcp any 10.14.0.0 0.0.255.255 eq 139
Deny tcp any 10.14.0.0 0.0.255.255 eq net bios-dgm
Deny tcp any 10.14.0.0 0.0.255.255 eq netbios-ns
Deny tcp any 10.14.0.0 0.0.255.255 eq 445
Permit ip any any
Now to get this right in my head isn't the first to permit commands useless as this is on the gig interface inbound which is traffic from the main network which would have destinations of 10.14.x and not sources of 10.14.x and those first two permit statements are essentially allowing packets with source addresses of 10.14.180 and 182 to come into the gig 0/1 port from the main network which they never will. It would be destinations of those addresses IN to the gig interface.
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