[Tutorial] Secure your APIs with Anypoint Flex Gateway in local mode (config file)

When you install Flex Gateway in local mode, you can edit all the gateway configurations from a .yaml file. Such as your API instances and security policies. Once you have installed, registered, and started your gateway in local mode, you can now secure your APIs using a configuration file.

Tutorial:

https://developer.mulesoft.com/tutorials-and-howtos/anypoint-flex-gateway-local-mode-config-file/