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Is there a setting that prevents a user from continuing their authenticated session when a MAC address change is detected based on the IP address of the incoming device?

e.g. User 'A' logs on using device 'X'. Before the users inactivity session times-out, user 'B' connects using device 'Y' which has been configured with the same IP as device 'X'.
What happens now is that Kerio assumes that user 'A' is now using a device with the original IP address but that the MAC has changed, and simply allows the session to continue.
This is registered in the Hosts log.

The end result is that user 'B' assumes the authentication level of user 'A'.
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