Quick-start scans using alternative logon credentials To run a network security audit using alternative logon credentials: Screenshot 22 - GFI LANguard N.S.S. new scan toolbar: Authentication methods drop down list 1. From credentials drop-down list provided in the toolbar select the Alternative credentials option. 2. In the adjacent fields specify the username and password to be used during this scan. 3. Configure the rest of the options as described in the ‘Quick-start scans using currently logged on user credentials’ section above.