设置用户不登入，不能访问其他页面

 <system.web>
  <pages clientIDMode="AutoID">
   <controls>
    <add assembly="FineUI" namespace="FineUI" tagPrefix="x"/>
   </controls>
  </pages>
  <httpModules>
   <add name="FineUIScriptModule" type="FineUI.ScriptModule, FineUI"/>
  </httpModules>
  <httpHandlers>
   <add verb="GET" path="res.axd" type="FineUI.ResourceHandler, FineUI" validate="false"/>
  </httpHandlers>
  <httpRuntime maxRequestLength="102400 "/>
  <customErrors mode="Off"/>
  <compilation debug="true" targetFramework="4.0"/>
  <!--设置用户不登入，不能访问其他页面-->
    <authentication mode="Forms">
      <forms name=".ASPXFORMSAUTH" loginUrl="~/default.aspx" timeout="120" defaultUrl="~/main.aspx" protection="All" path="/"/>
    </authentication>
    <authorization>
      <deny users="?"/>
    </authorization>
    
 </system.web>

<!--设置文件的访问权限-->

  <location path="res.axd">
    <system.web>
      <authorization>
        <allow users ="*" />
      </authorization>
    </system.web>
  </location>