For the sake of computer security, we'd better set the user name and password of each * * * access directory when setting it. The setting method is as follows:

1. Log in to the Alibaba Cloud server, enter the console, and click Cloud Server ECS.

2. Click the instance in the ECS of Cloud Server and jump to the list of instances.

3. Find the Cloud Server instance in the instance list to open the port. Then click More-Network and Security Groups-Security Group Configuration.

4. Click Configure Rules in the security group of this instance to open the security group rules. There is a direction of entry and exit, here I open port 8082, which belongs to the direction of entry and exit. You can add new rules here. Here, in order to clone an existing rule directly, click the Clone button after the reference rule.

5. Edit the security group rules, change the port range of the clone information to 8082/8082, and then press OK. This will add the rule and open port 8082.