You must configure Vulnerability Assessment before creating and running tasks. Use the Account Management Tool to view, add, modify, or delete login credentials for the target machines that you want to include in your assessments.
Before configuring Vulnerability Assessment, ensure that you have the following information:
domain name and machine name
administrator account name
appropriate passwords
Vulnerability Assessment requires you provide this information for all the computers on your network that you want to include in your Assessment Tasks.
Account Management Tool Tutorial