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Simplest Code for ASP Password Protected Page

Sometimes you want to store private links on your server. Of course you wouldn't store important passwords this way because any system administrator at your web host provider could see them. What is the simplest way to password protect a single webpage with classic ASP? The code for this is shown below.

<html>
<head><title>Password Protected ASP page</title>
</head>
<body>

<%
If Request.Form("submit") ="Login" Then
   If Request.Form("password") = "mypass" Then
%>
   <!-- ENTER PAGE DATA HERE v -->
   <p>You are logged in</p>
   <!-- ENTER PAGE DATA HERE ^ -->
<%
   Else
      Response.Redirect "login.asp"
   End If
Else
%>
   <form name="form" action="login.asp" method="post">
   <table>
   <tr><td>Password: </td><td><input type="password" name="password"></td></tr>
   <tr><td colspan="2"><input type="submit" name="submit" value="Login"></td></tr>
   </table>
   </form>
<%
End If
%>

</body>
</html>

This code consists of an IF ELSE statement nested within an IF ELSE statement. The outer IF ELSE statement tests if the login form has been submitted, if not it displays the login form. If the login form has been submitted, it tests the form's password entry for the proper password. If the password is correct, it displays the html that you are protecting. If the password is not correct, it uses Response.Redirect to reload the page, displaying the login form.

To use this code, change the text "mypass" to your private password, then add your password protected HTML where indicated. As is, anyone can click "show page code" and view your password protected HTML. I did this to keep it simple. If you want it more secure, use Response.Write to render your password protected HTML.

As it is this code protects only one page. If you want to password protect more pages, then within the nested IF THEN statement, set a session variable, e.g. Session("bloggedin") = True, and then on each other page use an IF THEN statement to check that variable, e.g. If Session("bloggedin") = TRUE Then, displaying the page HTML if TRUE, Else use Response.Redirect to reload the login form page.

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