D-Link DSL-6740U User Manual page 88

Section 3 - Configuration
Admin
The Admin option is used to set a password for access to the
Web-based management. By default there is no password
configured. It is highly recommended that you create a password to
keep your new router secure.
Access to your DSL Router is controlled through three user
accounts: admin, support, and user.
Admin Password
Enter a password for the user "admin", who will have full access to
the Web-based management interface.
Support Password
Allows an ISP technician to access your DSL Router for
maintenance and to run diagnostics.
User Password
Allows user to view configuration settings and statistics, as well as
update the router's firmware.
D-Link DSL-6740U User Manual 88