Many users view Tailscale strictly as a private mesh network tool for connecting personal devices. While this is the foundation of the service, there is a feature called Funnel that changes how you expose local applications. Instead of managing complex configurations, this command allows you to share a specific local web application as a public HTTPS endpoint. This provides a direct path for external users to access your project without requiring them to install VPN software or join your network.
Traditional methods for sharing local services often involve technical hurdles such as port forwarding, dynamic DNS management, and reverse proxy configuration. Dealing with CGNAT or renewing certificates manually adds layers of maintenance that can discourage testing and development. Funnel removes these friction points by handling the connection termination at the Tailscale layer. You essentially point the command at your local port, and the service manages the traffic routing for you.
Moving a local application to a public address changes your security requirements. Once you move an app out of the private mesh, Tailscale access controls no longer govern the traffic. If your application lacks its own login authentication, anyone who finds the public URL can interact with it. Consequently, you must ensure that your software handles user authentication independently before you run the command. The tool provides a practical way to share web hooks, dashboards, or temporary project builds while traveling without opening your entire home network to the web.
This workflow is useful for low-stakes projects that do not require full cloud hosting or uptime guarantees. It allows you to share a live build with a client or test real traffic against your code in minutes. By removing the need for permanent infrastructure, you can move projects from localhost to a shared state more quickly. Remember to check your active connections regularly, as these funneled ports stay open until you explicitly disable them through the command line.