By default, Nagios defines a default user nagiosadmin with no password and a default contact nagiosadmin. Before you can log in to the Nagios website, you must set a password for the Nagios user nagiosadmin. For information about configuring a password and setting up contact information for the Nagios user nagiosadmin, see Section 7.5.1, Configuring Nagios Authenticated Users and Contacts.