Apologies up front... I'm quite new to SharePoint.
I'm developing an application page in SharePoint because what I'm doing is a lot of custom development, AJAX/jQuery external database, custom widgets etc.
By using the application page, I can tap into SharePoint to use it's security fro authenticating users, however, I don't see my custom application anywhere in any administration pages of SharePoint Foundation (SPF) 2010 or SharePoint Designer (SD) in regards to setting page permissions. Where in SPF2010 or SD can you go to set permissions for a custom application page? Or is it not possible via the GUI and I need to hard-code the groups/users permitted to see/use this page in the page itself?