[Bug]: `Public IP:Port` Unable to access code-server

[MrMoe830]

Is there an existing issue for this?

• [X] I have searched the existing issues

OS/Web Information

• Web Browser: Chrome
• Local OS: Windows11
• Remote OS: CentOS8.2
• Remote Architecture: arm64
• code-server --version: 4.22.0

Steps to Reproduce

1. Download code-server-4.22.0-linux-amd64.tar.gz and upload it to the remote server via FTP.

2. Execute the following command on the remote server: tar -xvf code-server-4.22.0-linux-amd64.tar.gz cd code-server-4.22.0-linux-amd64/ export PASSWORD="mypassword" ./bin/code-server --port 9999 --host 0.0.0.0 --auth password

3. Then the remote server terminal displays the following information:

4. Then, enter: public IP:9999 in the address bar of the local browser.

Expected

code-server connects successfully and asks for password（mypassword）

Actual

I got the following error message:

Logs

No response

Screenshot/Video

No response

Does this issue happen in VS Code or GitHub Codespaces?

• [ ] I tested this in native VS Code.
• [ ] This does not happen in native VS Code.
• [ ] I tested this in GitHub Codespaces.
• [ ] This does not happen in GitHub Codespaces.

Are you accessing code-server over a secure context?

• [ ] I am using a secure context.

Notes

There is also a personal blog website (www.techfan.top) running on my remote server, and my server is in mainland China. I have opened port permissions for port number 9999, but I still cannot access it successfully. I'm not sure if access to code-server failed because of a firewall or other factors that I didn't take into account.

Is it because my installation process is incorrect? I hope to get your help, thank you!

[MrMoe830]

I have found the cause of the problem. It is due to the firewall failing to successfully release the port. I have two methods to solve the problem I encountered. The first method is to execute systemctl stop firewalld.service to shut down the firewall service. The other method is to execute firewall-cmd --zone=public --add-port=9999/tcp --permanent to configure permanent release permissions for the port. .