Limit Webservices access to two domains

Question

How do I limit access to a web service to only two domains?

I would like only the domain: http://"ServidoX".ipesp.gov" and the http://"ServidoY".ipesp.gov" can consume this service.

I’ve tried modifying on the web.Config using the tag :

add name="Access-Control-Allow-Origin" value="http://"XXXXX".ipesp.gov,   http://"YYYY.ipesp.gov"

Currently the Web.Config file is configured this way :

add name="Access-Control-Allow-Origin" value="*"

I also tried to restrict access to the application in IIS Server , but it did not help.

Answer 1

Ping (ping servorx.ipesp.Gov) to these addresses and set the IIS ip Restriction to allow access only to those ips. If servers do not accept ping, find out their ip number.

To configure the IIS see in http://technet.microsoft.com/en-us/library/cc730889.aspx