To access a site type
<proxy url>/<site_name>
bibi21000's code at https://bibi21000.github.io/janitoo_manager_proxy/_modules/janitoo_manager_proxy/views.html helped me to come up with what headers to whitelist.
To access a site type
<proxy url>/<site_name>
bibi21000's code at https://bibi21000.github.io/janitoo_manager_proxy/_modules/janitoo_manager_proxy/views.html helped me to come up with what headers to whitelist.