[galaxy-dev] public datasets/histories with external auth

Hi, We have a galaxy server setup using external shibboleth authentication. While we would like to have site behind authentication realm, there are instances when our galaxy datasets/histories need to be accessible publicly from other websites. We tried adding an exception to auth rule for /datasets path using Location directive in apache web server configuration, however galaxy server returned an error as: {{{ Access to Galaxy is denied Galaxy is configured to authenticate users via an external method (such as HTTP authentication in Apache), but a username was not provided by the upstream (proxy) server. This is generally due to a misconfiguration in the upstream server. }}} Is there any way to share public histories and datasets when galaxy is using external authentication mechanism? I have thought about setting up (fake) anonymous REMOTE_USER variable for /datasets path, but not sure whether this is correct approach. Also, would it require any galaxy code changes? Any thoughts? Thanks, Shantanu.