I need to allow public caching in IIS 7.5. This is needed to make my CDN work since they honr host header caching requests. I have added the following to the web.config for the site: ---begin--- <httpProtocol> <customHeaders> <add name="Cache-Control" value=" public, max-age=31536000" /> </customHeaders> </httpProtocol> ---end--- I get teh follwoing when I run curl: ---begin--- > Host: www.XXX.com > Accept: */* > < HTTP/1.1 200 OK < Date: Mon, 27 Sep 2010 17:08:53 GMT < Server: Microsoft-IIS/7.5 < Cache-Control: private=,public= < X-AspNetMvc-Version: 2.0 < X-AspNet-Version: 4.0.30319 < X-Powered-By: ASP.NET < Cache-Control: max-age=31536000 < Via: HTTP/1.1 www.XXX.com (MII-WSD/1.4) < X-Pb-Mii: Powered by Mirror Image Internet < Content-Type: text/html; charset=utf-8 < Content-Length: 15672 < Via: 1.1 bos101 (MII-APC/1.5) ---end---