Anti-DDoS Advanced (Global Enterprise Edition) supports blocking the source traffic accessing Anti-DDoS instances based on specified protocols, such as ICMP, TCP, UDP, and other protocols. After the configuration is completed, all matched access requests will be directly blocked. Due to the connectionless feature of UDP protocol (unlike TCP, which requires a three-way handshake process), it has natural security vulnerabilities. If you do not have UDP businesses, we recommend blocking the UDP protocol.
You have purchased an Anti-DDoS Advanced (Global Enterprise Edition) instance and set the object to protect.