Fast Link Checker supports the following authorization methods:

• Basic authentication (password is sent in clear text)
• Integrated Windows Authentication (IWA)
• Digest authentication for Windows domain servers
• GSS-Negotiate authentication

To check links in pages which are protected with username and password, select the appropriate authorization method in the Authentication section of site settings and specify username and password in the "User name" and "Password" fields.

Note: This feature is not supported by Fast Link Checker Lite.