How to secure the ASP.NET_SessionId cookie?

c# asp.net session-cookies
Pete picture Pete · May 12, 2011 · Viewed 119.6k times · Source

I have set the .ASPXAUTH cookie to be https only but I am not sure how to effectively do the same with the ASP.NET_SessionId.

The entire site uses HTTPS so there is no need for the cookie to work with both http and https.

Answer

Marcel Hoyer picture Marcel Hoyer · Jan 23, 2012

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

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