[galaxy-dev] Put Galaxy behind an index.php page

Hi Galaxy support, Currently we are using Apache proxy to Galaxy and followed the instructions on this webpage: <https://wiki.galaxyproject.org/Admin/Config/Apache%20Proxy> https://wiki.galaxyproject.org/Admin/Config/Apache%20Proxy. Now I am trying to put Galaxy behind a index.php webpage. The scenario would be: 1. user input the Galaxy URL; 2.directed to the php page and then verify their identity; 3. if approved, redirect to Galaxy. Does anyone knows how to configure this in Apache? The reason I am doing this is because the index.php page contains our two-factor authentication API. Any help is appreciated. Thanks. -Jing