We create websites and microservices. Let's say we want it to be publicly accessible and hosted on the IIS server. Due to security concerns, we are forced to limit access to various APIs and websites to specific IP ranges exclusively. This will limit access to our website's API to a select group of users.
This requires the usage of the URL Rewrite module extension in the IIS Server.
Download this from the link below.
https://iis-umbraco.azurewebsites.net/downloads/microsoft/url-rewrite
Sample configuration for restricting the IP range