Blocking SIP device IPs
The FortiVoice unit automatically blocks the IP addresses of the SIP devices that initiate the attacks against any extensions based on the thresholds and parameters set. For more information on configuring security settings, see Configuring intrusion detection.
You may select an IP to delete it, add it to the exempt list if it is wrongly blocked, and view its blocked history.
To view the blocked IPs, go to Monitor > Security > Blocked IP.