I've got the scanning threat detection turned on, in my Cisco ASA 5520, but someone turned off the option for "shun hosts detected by scanning threat". Now, when I try to enable it through the ASDM app, I get this Error message when applying the settings:
[ERROR] no threat-detection scanning-threat Can not remove 'scanning-threat' while in use [OK] threat-detection scanning-threat shun
The settings are then refreshed by the ASDM client, and the "shun hosts detected by scanning threat" is still unchecked.
How do I get this thing turned on again?