alex :
From http://code.google.com/appengine/docs/python/urlfetch/overview.html#Secure_Data_Connection:\n\n\"Your application can connect to systems behind your company's firewall using the Google Secure Data Connector (SDC). With the SDC Agent set up on your network, App Engine applications running on your Google Apps domain can authenticate with the Agent and access URLs on your intranet. The SDC Agent ensures that only your applications can connect to your intranet, and that they will do so only for users signed in using an Apps account on your domain.\"",
2012-03-12T13:57:08