Help Center/ Anti-DDoS Service/ User Guide/ Advanced Anti-DDoS User Guide/ Configuring a Protection Policy/ Blocking Traffic of a Specified Protocol
Updated on 2026-07-06 GMT+08:00
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Blocking Traffic of a Specified Protocol

Advanced Anti-DDoS offers a one-click mode to block inbound traffic based on protocol type. If you do not deploy UDP services, you are advised to disable the UDP protocol.

Once the UDP protocol blocking is enabled, the rate of UDP access traffic will be restricted if it exceeds 2 Mbit/s.

Policy Validity

Once configured, the policy remains in effect permanently.

Enabling Protocol Blocking

  1. Log in to the AAD console.
  2. In the navigation pane on the left, choose Advanced Anti-DDoS > Protection Policies. The Protection Policies page is displayed.

    Figure 1 Advanced Anti-DDoS protection policies

  3. Select the instance for which you want to configure protocol blocking.
  4. In the Protocol-based Traffic Control configuration area, click Set.
  5. In the dialog box that is displayed, select a route and set the switch to enable the function.

    Figure 2 Disabling a protocol

Related Operations

Disabling protocol blocking: Click Set in the Protocol-based Traffic Control area. In the displayed dialog box, select a route and toggle off the switch () to disable the function.

Parent Topic: Configuring a Protection Policy