Imagine a use-case where you're already testing a service using ngrok and you want to spin up a different service and test that service on a different port.
Tricky situation, right?
That's where ngrok's power to run multiple tunnels simultaneously comes into the picture.
ngrok Agent configuration file:
The ngrok agent supports an optional, YAML configuration file which provides you with the power to run multiple tunnels simultaneously as well as to tweak some of its more advanced settings.