Authentication in asp.net
<pre><code>protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        Response.Cache.SetCacheability(HttpCacheability.NoCache );
        Response.Cache.SetAllowResponseInBrowserHistory(false);
    }
</code></pre>

<p>This code i have used to authenticate the website,its working but only when the user copies the url and paste it in a new window,but opening in the new window leads to the next page without any login credentials.</p>
