Configure the Anonymous Authentication Identity
Applies To: Windows 7, Windows Server 2008, Windows Server 2008 R2, Windows Vista
When you enable Anonymous authentication for an FTP server, you can change the account that IIS uses to access your FTP sites. By default, IIS 7 uses IUSR as the user name for anonymous access. This user name is created when you install IIS 7.
For more information about how to enable Anonymous authentication for an FTP server, see Enable or Disable Anonymous Authentication.
To configure the Anonymous authentication identity
Open IIS Manager.
In Features View, double-click FTP Authentication.
On the FTP Authentication page, select Anonymous Authentication.
In the Actions pane, click Edit.
In the Edit Anonymous Authentication Credentials dialog box, enter a user name and password in the User name and Password boxes. Enter the password again in the Confirm Password box, then click OK.