UDP port scan protection

The UDP port scanning feature is similar to TCP port scanning in capabilities, user commands, and operational implementation. The UDP port scanning option is disabled by default. The default threshold period value is 5000 microseconds. You can manually set the threshold period value, which ranges from 1000 to 1,000,000 microseconds. This feature protects against DDoS attacks on some exposed public UDP services by allowing fewer than 10 new sessions in the configured threshold period for each zone and source IP.