Protect a shared localhost endpoint with Google OAuth using ngrok Traffic Policy

domain: ngrok.com · 6 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗

Documented steps

  1. After authenticating, run `ngrok config edit` and add a named endpoint whose `traffic_policy` applies `on_http_request` actions followed by an `upstream` to your local port:
  2. endpoints: - name: cli-quickstart url: <your-domain> traffic_policy: on_http_request: - actions: - type: oauth config: provider: google - expressions: - "!actions.ngrok.oauth.identity.email.endsWith('@acme.com')" actions: - type: deny upstream: url: 8080 protocol: http1
  3. Start it with `ngrok start cli-quickstart`
  4. Visitors hitting the URL are redirected to Google sign-in before reaching your app; emails that fail the allow-list expression get denied
  5. The example uses ngrok's default Google OAuth application; bring your own OAuth client to control branding and tenants
  6. Docs: https://ngrok.com/docs/guides/share-localhost/quickstart

Known gotchas

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