Log on to the Alibaba Cloud console.
Click Anti-DDoS Basic service under Security.
Unfold Anti-DDoS PRO to open Instance List.
Select Non-website access of the Anti-DDoS instance to be set up.
Click Add one rule on the Security Configuration page.
Select a protocol type under Forwarding protocol/port, and input the forwarding port.
Input Original site port and Original site IP. Use commas to separate multiple origin IP addresses.
- UDP port 53 and TCP port 80 are not supported.
- Up to 50 layer 4 forwarding rules can be added to the list.
- Up to 20 origin IP addresses can be added to a layer 4 forwarding rule.
Click OK. A new rule entry will be added to the list.