This document provides an introduction to using message level security, in particular GSI Secure Conversation message level security, with the Globus Toolkit 3. It is based upon and replicates documentation listed in section 10 but combines this into a (hopefully) more coherent and useful form. Transport level security is not described since this is to be deprecated in future releases. I did not have root access so some of the issues relating to configuring GSI and installing host certificates is conjecture (!)
