The problem of Singapore VPS connection failure may involve many aspects, including network connection, firewall settings, SSH access, etc. This article will provide you with some suggestions to solve VPS connection issues in Singapore.

　　1. Check network connection:

　　​First, make sure your local network connection is normal. Make sure your computer has an internet connection and there aren't any issues blocking the connection. You can try visiting other websites through your browser to confirm whether your network connection is normal.

　　2. Verify VPS IP address:

　　Make sure you are using the correct VPS IP address to connect. Check the IP address provided by your VPS provider to make sure there are no typos or typos.

　　3. Check the firewall settings:

　　VPS usually have firewall settings to ensure network security. You need to confirm that your VPS firewall is not blocking your connection. You can connect to the VPS using SSH, or log into the VPS provider's admin panel to configure firewall rules. Make sure the SSH port (22 by default) is not blocked.

　　4. SSH connection problem:

　　​If you use SSH to connect to your VPS, make sure your SSH client is configured correctly. Check that the SSH key, username and password are correct. You can also try using SSH's debug mode to see detailed connection error information. For example:

　　ssh -v user@your_vps_ip

　　This will display details related to the SSH connection, which can help identify the problem.

　　5. Restart VPS:

　　Sometimes, restarting the VPS can solve connection problems, especially if there are problems with certain services or configurations on the VPS. You can perform a reboot via the VPS provider's admin panel or by SSHing into your VPS.

　　6. Contact VPS provider support:

　　If you have tried all of the above steps and are still unable to resolve the issue, it is recommended that you contact your VPS provider’s technical support team. They can provide more professional help and solutions to ensure you can successfully connect to your VPS.

　　7. Use alternate connection methods:

　　Sometimes, network issues can affect SSH connections. In this case, you can try using other remote management tools provided by the VPS provider, such as VNC or web control panel, to access your VPS. This can help you diagnose SSH connection problems.

　　In summary, when you are unable to connect to your Singapore VPS, first check the network connection, IP address, firewall settings and SSH configuration. If the issue persists, contact your VPS provider’s support team for further assistance. Resolving connection issues promptly is very important to ensure the normal operation of your VPS.