Click Network Protection → Network attack protection and then click Edit next to IDS exceptions.
Select the Detection and type the Remote IP address (IP address of the machine with the software that scans the network). In the Action section, select No from the Block drop-down menu. Click OK three times to save.
Duplicate IP address detection
If you receive a notification of "Duplicate ID addresses on network", in the Detection drop-down menu select Duplicate IP addresses on network.