What is the GitLab WebUI port?

The GitLab WebUI, which allows users to interact with GitLab through a web browser, typically uses port 80 for HTTP and port 443 for HTTPS by default.

Here's a more detailed explanation:

1. Default HTTP Port (80): When you access GitLab via a standard HTTP connection, the web interface will usually be accessible through port 80. This is the commonly used default port for unencrypted web traffic. If you have a URL like http://your-gitlab-domain.com, your browser will automatically attempt to access the server on port 80.

2. Default HTTPS Port (443): For secure, encrypted communication using HTTPS, GitLab's WebUI operates on port 443. This is the standard port for encrypted web traffic, offering a secure connection. If you use a URL such as https://your-gitlab-domain.com, the browser will communicate via port 443.

3. Configuration: While 80 and 443 are the standard ports, it's possible to configure GitLab to listen on different ports. For example, if you have multiple web services running on the same server, or if there's a specific security requirement, you might reconfigure GitLab to listen on another port. This configuration can be found in the GitLab configuration files, typically in the gitlab.rb file if you're using Omnibus installations, or within the Docker configuration if you're using a containerized setup.

4. Accessing GitLab on Non-Standard Ports: If GitLab is configured to use a non-standard port (e.g., port 8080 for HTTP or 8443 for HTTPS), you would access it by including the port number in the URL. For example, http://your-gitlab-domain.com:8080 or https://your-gitlab-domain.com:8443.

5. Firewall Considerations: Ensure that your firewall allows traffic on the ports that GitLab is using, particularly if you've customized the port. This means checking for rules that might block or restrict traffic on ports 80 and 443, or any non-standard ports you've configured. When troubleshooting access issues, checking firewall rules should always be one of the first steps.

In summary, while the default ports for accessing GitLab’s WebUI are 80 for HTTP and 443 for HTTPS, it’s important to verify the actual configuration as these settings can be customized based on particular environments and requirements. Always refer to the GitLab configuration files to verify the configured ports for your GitLab setup.

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