ViewFormPagesLockDown is a SharePoint Feature (not in WSS) that helps us in:
- Allows anonymous users to only view the Publishing pages, not any of the form or view pages (DispForm.aspx, AllItems.aspx)
- Disallows anonymous access to pages in the _layouts directory that inherit from LayoutsPageBase.
Yes, These users might not have the ability to do anything, but you may not want anonymous users to view the form pages.
If you want to place your custom application pages inside the _layouts directory, which anonymous users must hit, there's the UnsecuredLayoutsPageBase class you can use as the base class of your page, and there's always just the Page class as in a standard ASP.Net application page.
To Activate the Feature :
stsadm -o activatefeature -url -filename ViewFormPagesLockDown\feature.xml
If you still get the Form pages visible for the end users, Try: With the ViewFormPagesLockDown feature Enabled, disable Anonymous Access in the site, then re-enable it.
MSDN Link: http://technet.microsoft.com/en-us/library/cc263468(office.12).aspx
Lock down Application Pages in SharePoint 2013:
SharePoint 2013 brought this feature in interface via site feature "Limited-access user permission lockdown mode feature".
Go to Site collection features, activate/deactivate "Limited-access user permission lockdown mode" feature to restrict/allow anonymous users to access application pages.
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