The setting of this parameter determines whether user and group list information is returned for an anonymous connection. and mirrors the effects of the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\LSA\RestrictAnonymous registry key in Windows 2000 and Windows NT. When set to 0, user and group list information is returned to anyone who asks. When set to 1, only an authenticated user can retrive user and group list information. For the value 2, supported by Windows 2000/XP and Samba, no anonymous connections are allowed at all. This can break third party and Microsoft applications which expect to be allowed to perform operations anonymously. The security advantage of using restrict anonymous = 1 is dubious, as user and group list information can be obtained using other means. The security advantage of using restrict anonymous = 2 is removed by setting guest ok = yes on any share. 0