writing admin pages using asp.net

I am going to create a couple asp.net pages with login page. I am thinking about Forms authentication. The users are around 1000 to 5000. What is the best way to achieve this? I appreciate any help.

Thank开发者_如何学JAVAs..

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Form Authentication with SQL Server is a good idea. Its flexible, but if you want full control you best bet is to come up with a custom solution for your 5k users.