When an App Service is configured with an IP Restriction, only whitelisted IP's can access the App service URL/site. Other users cant access the URL. By default the blacklisted IP's or denied IP's will receive
Error 403 - This web app is stopped. Many SR's can been be seen with this requirement to divert or return custom error message instead of 403 error. It would be great if we have a feature in portal to divert with custom message when the IP restrictions are configured for a web app.