Expose Your Local Server to the Internet Instantly with Ngrok on macOS
This guide shows how to install, configure, and use Ngrok on macOS to create a secure public tunnel that forwards internet traffic to a local development server, enabling quick testing without deploying to a public server.
Why use Ngrok?
When a local service cannot be accessed from outside due to internal network restrictions, a public IP is required; instead of buying a public server, you can use NAT traversal. Ngrok provides an elegant solution that exposes a local port to the internet without complex operations.
Step 1: Install Ngrok on macOS
Ngrok can be installed via Homebrew or by downloading the installer from the official website.
1. Homebrew: brew install ngrok/ngrok/ngrok 2. Download: Visit https://ngrok.com/download and install the package.
Step 2: Obtain an authentication token
Log in to the Ngrok dashboard at https://dashboard.ngrok.com/get-started/setup with a GitHub account to get a free auth token.
Run the following command in the terminal, replacing <token> with the token you obtained:
ngrok config add-authtoken <token>Step 3: Start a tunnel
Open a terminal and execute: ngrok http <your‑local‑port> The generated public URL forwards traffic to your local project. Press Ctrl+C to stop the tunnel.
Copy the public link to access your project from any network, even when the local LAN is disabled.
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