form认证
<authentication mode="Forms">
<forms name=".ChinaMobileSMSFormsAuth" loginUrl="login.aspx" defaultUrl="chinamobilesms/default.htm" protection="All" timeout="120" />
</authentication>
<authorization>
<deny users="?"/>
<!-- 允许所有用户 -->
<!-- <allow users="[逗号分隔的用户列表]"
roles="[逗号分隔的角色列表]"/>
<deny users="[逗号分隔的用户列表]"
roles="[逗号分隔的角色列表]"/>
-->
</authorization>
<!--排除个别不要认证的页面-->
<location path="CheckCodeImage.aspx">
<system.web>
<authorization>
<allow users="*"/>
</authorization>
</system.web>
</location>