title: Trying to test LDAP-based authentication from forumsys?
body: <p>I've not done any LDAP-based authentication before and also I've not worked with any LDAP server before. So I need a free online LDAP server to play with, I've found this <a href="https://www.forumsys.com/tutorials/integration-how-to/ldap/online-ldap-test-server/" rel="noreferrer">https://www.forumsys.com/tutorials/integration-how-to/ldap/online-ldap-test-server/</a> </p>
  
  <p>However my code is not working (or the info there has become invalid, I'm not sure), the result of authen is always false, here is my code:</p>
  
  <pre><code>path = "ldap.forumsys.com:389/dc=example,dc=com";
  using (var pc = new PrincipalContext(ContextType.Domain, null, path))
  {
    //this always returns false
    var ok = pc.ValidateCredentials("read-only-admin", "password");
  }
  </code></pre>
  
  <p>Could you make it work on your side? Or at least please assert that the info there is invalid, in that case if possible please give me some other info (from other free LDAP servers for testing).</p>