How to apply form authentication for some web pages

[Rx31]

Please consider this scenario:I have a project that it contains some web pages.I add form authentication based on \[code\]Active Direcotry\[/code\] for my all web pages.For Example :\[code\]<connectionStrings> <add name="ADConnectionString" connectionString="LDAP://testdomain.test.com/CN=Users,DC=testdomain,DC=test,DC=com" /></connectionStrings><authorization> <deny users="?" /> </authorization>\[/code\]Now I want to exclude some pages from form authentication.How I can exclude some pages in \[code\]web.config\[/code\]?thanks