How to secure the ASP.NET_SessionId cookie?

To add the ; secure suffix to the Set-Cookie http header I simply used the <httpCookies>element in the web.config:

<system.web>

  <httpCookies httpOnlyCookies="true" requireSSL="true" />

<system.web>

IMHO much more handy than writing code as in the article of Anubhav Goyal.

See: http://msdn.microsoft.com/en-us/library/ms228262(v=vs.100).aspx