DoS & spoof protection and VoIP

Condition

Unstable VoIP connection when when DoS settings for UDP rate are applied.

Cause

UDP flood settings cause VoIP traffic to drop.

Remedy

  1. Go to Intrusion prevention > DoS & spoof protection.
  2. clear the Apply flag check boxes for UDP flood.
  3. Test the VoIP connection.
  4. If this resolves the VoIP issue lower the UDP flood protection values before applying the flag again.

    There is no set value that because each environment is different. Adjust the values until you find those that works with your VOIP setup.