To allow anonymous access by Everyone under
Windows XP
Click Start, point to Control Panel, point to
Administrative Tools, and then click either Local
Security Policy or Domain Security Policy (on a domain
controller).
In Security Settings, double-click Local
Policies, and then click Security Options.
Right-click Network access: Let Everyone permissions apply
to anonymous users, and then click Properties.
To allow permissions applied to the Everyone group to apply to
anonymous users, click Enabled.
Or, to prevent permissions applied to the Everyone group from
applying to anonymous users, click Disabled.
Note
There is no command-line method for this procedure.