How to authenticate using Active directory!

Question

Hi all!
at present im using a code given below, its working fine! currently we are using mixed mode active directory! we are going to migrate that to Native mode!
import java.util.Properties;
import javax.naming.*;
import javax.naming.directory.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.Vector;
import com.aigss.codegene.utils.PropertyDispatcher;
public class LdapAuthentication//Servlet extends HttpServlet
     private java.util.Hashtable cache = new java.util.Hashtable();
      * @param loginid
      * @param passwrd
      * @return boolean
     public boolean authenticate(String loginid, String passwrd) {
          if(passwrd.trim().equalsIgnoreCase(""))
          return false;
          Properties props = new Properties();
          String ldapHost = "ldap://HDCQ3Q5CDOM01:389";
          String DN =
               "CN="
                    + loginid.trim()+"DN=,CN=Users,DC=pslsdc,DC=legacy,DC=r5,DC=websi,DC=net";
          System.out.println("DN: "+DN);     
          props.put(Context.INITIAL_CONTEXT_FACTORY,com.sun.jndi.ldap.LdapCtxFactory);
          props.put(Context.SECURITY_AUTHENTICATION, "simple");
          props.put(Context.SECURITY_CREDENTIALS,  passwrd);
          props.put(Context.SECURITY_PRINCIPAL, DN);
          props.put(Context.PROVIDER_URL, ldapHost);
          try {
               DirContext ctx = new InitialDirContext(props);
               System.out.println("successfully authenticate DN: " + DN);
               return true;
          } catch (Exception ex) {
               System.out.println(ex+loginid);
               try{
                    throw new Exception("login failure : "+ex+loginid);
               }catch(Exception e){
                    e.printStackTrace();
               return false;
}when i try to connect into Active directory the new one, im unable to get authenticate, user not found error is coming! (data 525)
im unable to continue!
i tried changing the DN to : [email protected]
also DN: mydomain\vijayvignesh
then im getting error:
java.lang.Exception: istar login failure : javax.naming.AuthenticationNotSupportedException: [LDAP: error code 8 - 00002028: LdapErr: DSID-0C09018A, comment: The server requires binds to turn on integrity checking if SSL\TLS are not already active on the connection, data 0, vecei almost tried everything!
if any one can find a solution pls do come forward!
remember my code works fine in Mixed mode active directory, when we shift that to native mode, it is not working!

Answer 1

If you would read the Active Directory error message, it actually gives you a hint:
"The server requires binds to turn on integrity checking if SSL\TLS are not already active on the connection"
There was a security feature introduced in Windows Server 2003 that would allow administrators to only allow connections over encrypted sessions (eg. SSL/TLS or Kerberos signing and sealing). This setting is configured somewhere in the Domain Controller's Group Policy, called something like "LDAP Server signing"
One solution is to use SSL/TLS. Refer to my previous post titled "JNDI, Active Directory & Authentication (part 2) (SSL)" at
http://forum.java.sun.com/thread.jspa?threadID=581425&tstart=50