Use the ICIClientSettings interface SetAnonymousLogin method to allow or prohibit anonymous logins.
Signature:
HRESULT SetAnonymousLogin(
[in] SFTPAdvBool val );
Values:
0 = Prohibited
1 = Allowed
-2 = Inherited
Example:
Dim strUser:strUser = "test"
set oUserSettings = oSite.GetUserSettings(strUser)
oUserSettings.SetAnonymousLogin( True )