I want to authenticate against Active Directory using an ASP.Net 2.0 login 
control but am having a time getting that to work and am not sure how to 
troubleshoot.

When I attempt to open Default.aspx I properly get redirected to Login.aspx. 
Regardless of what I type in the Username/Password boxes, I get a "login 
attempt was not successful."

There is nothing in my Machine.config that points to a FormsAuthentication 
anything.  Is this a problem?

My web.config is as follows:

<connectionStrings>
    <add name="AD_ConnectionString"
            connectionString="LDAP://my.domain.com/OU=myou,DC=my,DC=domain,DC=com"
    />
</connectionStrings>

<system.web>
    <compilation debug="true" />
    <authentication mode="Forms">
        <forms name=".ADAuthCookie"
                    timeout="10"
                    loginUrl="Login.aspx"
                    domain="myDomain"
        />
    </authentication>

    <authorization>
        <deny users="?" />
        <allow users="*" />
    </authorization>

<membership defaultProvider="MyADMembershipProvider">
    <providers>
        <add name="MyADMembershipProvider"
                 type="System.Web.Security.ActiveDirectoryMembershipProvider,
                            System.Web,
                            Version=2.0.0.0,
                            Culture=neutral,
                            PublicKeyToken=b03f5f7f11d50a3a"
                connectionStringName="AD_ConnectionString"
        />
    </providers>
</membership>