How to provide Admin folder Authentication

hi guys
1.structure of the web application like

wesite
---Admin
 -----VegaFABs.aspx
  ----ViewAcnt.aspx
    ----DataDictionary.aspx
      ---web.config

Home.aspx
Registration.aspx
web.config
Code in web.config which contained in Admin folder?xml version="1.0"?> <configuration> <appSettings/> <connectionStrings/> <location path="Admin"> </location> <system.web> <authentication mode="Forms"> <forms loginUrl="~/Home.aspx" timeout="20" > </forms> </authentication> <authorization> <allow users="?"/> <deny users="*"/> </authorization> </system.web> </configuration&g ...