Manage Your Authentication Records
Authentication to HTML forms is optional. These authentication techniques are supported: HTTP Basic server-based authentication and simple form authentication. One or more authentication records may be added to a web application to support authentication. Each record provides credentials (user name and password) to be used for authentication when the scan encounters a login form.
When authentication is enabled for a web application, the crawler attempts authentication the first time the web crawler encounters a login form. Upon success the crawler visits the form action link, gathers information for analysis and continues crawling.
How-To's
Go to Account > Web Applications and click the Edit icon 
for a web application. Scroll down to the Authentication Records list. (If no records are defined for the web application, the list is empty.)
Add a record
Click the Add button to the right of the Authentication Records list and enter the authentication record settings and then click Save.
Edit a record
Click the Edit icon , enter the authentication records settings and then click Save.
Delete a record
Click the Delete icon 
.
Learn more
When this option is selected, authentication is attempted only when the form is submitted via a link that uses SSL (link URI https://...).
What is the Realm setting?What is the Realm setting?
For authentication type Server HTTP Basic, this is the name of a protected realm. When specified, authentication is attempted only to the protected realm.