Whitelist inbound IP address for Azure WebApp?
You can restrict IP addresses in the web.config using the ipSecurity element like so:
<system.webServer> <security> <ipSecurity allowUnlisted="false"> <add ipAddress="XXX.XXX.XXX.XXX" allowed="true" /> </ipSecurity> </security></system.webServer>Full documentation on the ipSecurity element: https://www.iis.net/configreference/system.webserver/security/ipsecurity
Azure Web App support for the feature:https://azure.microsoft.com/en-us/blog/ip-and-domain-restrictions-for-windows-azure-web-sites/