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Unfortunately, there is no built-in tool for unlocking a user account.In order to unlock an account, you can modify the database directly - change the table for the appropriate user account - or create a web-based interface that lists locked out accounts with options to unlock them.In this tutorial we will examine how to validate a user's credentials against the Membership user store using both programmatic means and the Login control.We will also look at how to customize the login control's appearance and behavior.
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Therefore, a hacker attempting to break into your site could create a program that exhaustively sends HTTP requests to the login page with a valid username and a guess at the password.
If the password guess is correct, the login page will return the authentication ticket cookie, at which point the program knows it has stumbled upon a valid username/password pair.
When a visitor reaches the login page and submits their credentials, their browser makes an HTTP request to the login page.
If the credentials are valid, the HTTP response includes the authentication ticket in a cookie.Moreover, the Login control automatically signs in the user (assuming the submitted credentials are valid), thereby saving us from having to write any code. You can enter these delimiters manually, or, as Figure 2 shows, you may select the text to comment out and then click the Comment out the selected lines icon in the Toolbar.