Login shows internal host/IP to internet public
When setting Require Authentication under Authentication, when you log out, you are redirected to login page, whose URL is:
In another installation, I see also:
(The private IP).
It must be noted that BOTH installations run with Nginx as Reverse Proxy.
In my case, Nginx is listening on port 80 and based on the host redirects to my server which has Apache2 + Redmine working.