Anti-DDoS Origin Basic provides protection against DDoS attacks for Elastic Compute Service (ECS) instances free of charge. By default, if the network bandwidth of an ECS instance exceeds 180 Mbit/s, the number of packets exceeds 30,000 per second, or the number of HTTP requests exceeds 480 per second, Anti-DDoS Origin Basic automatically scrubs traffic. The preceding values may vary based on instance types.
Before you perform a stress test on an ECS instance, you must log on to the Anti-DDoS console to change the protection threshold for the ECS instance. For more information, see Configure a cleaning threshold.
Note We recommend that you do not increase the request volume more than 100 times per minute during the stress test.