This service uses CILogon to provide federated authentication. This authentication mechanism works with your home institution to log you into this service.

It is critical to choose the right authentication institution, otherwise your user will be configured with the wrong permissions. Unless you've been told otherwise, follow these two choices:

1. If you are employed by Vanderbilt, use the Vanderbilt provider
2. If you are a member of CMS, authenticate with the CERN provider