On most Mura installs all administration logins can be found at:
You or the system administrator will provide a login and password. As a good rule of thumb for system administrators, when creating accounts do not input a password. This will require the user to use the forgot login form.
There are two ways of logging in via the front end.
If the content administrator has enabled the user login function either by the User Tools
or via the theme template
The other option is to push Esc+L on your keyboard and you will get a login for the page you are on.