Hey @kadowning, welcome to the discussion boards!
Can you be a little more specific? Are you trying to simulate anonymous access to a dashboard by automatically presenting a session cookie?
Lots of other users have put a reverse-proxy in front of Kibana to automatically add auth headers (example: Auto-authenticating to iframe-embedded Kibana dashboard)
We also have an open issue to better support these types of use cases here: https://github.com/elastic/kibana/issues/18331