Alibaba Cloud Security Group Configuration:
- Log in to Alibaba Cloud Console
- Find your ECS instance
- Click "Security Groups" → "Configure Rules"
- Add inbound rule: Port 22, Source 0.0.0.0/0
Connect Using Key Pair:
- Create key pair in Alibaba Cloud Console
- Download private key file (.pem format)
- Upload private key file in WebSSH
- Login with username ecs-user (CentOS) or ubuntu (Ubuntu)
Connect Using Password:
- Reset instance password (in console)
- Restart instance to apply password
- Enter username and password in WebSSH
- Recommend switching to key pair authentication later