Conectar el directorio activo con el soporte de ssl (ldaps)

Estoy tratando de conectar con el directorio activo con el apoyo de ssl.

Probé los pasos del siguiente sitio web.

http://confluence.atlassian.com/display/CROWD/Configuring+an+SSL+Certificate+for+Microsoft+Active+Directory

cuando trato de conectar el directorio activo desde el código java, da el siguiente error.

Exception in thread "main" javax.naming.CommunicationException: simple bind fail
ed: 172.16.12.4:636 [Root exception is java.net.SocketException: Connection rese
t]
        at com.sun.jndi.ldap.LdapClient.authenticate(Unknown Source)
        at com.sun.jndi.ldap.LdapCtx.connect(Unknown Source)
        at com.sun.jndi.ldap.LdapCtx.<init>(Unknown Source)
        at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(Unknown Source)
        at com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(Unknown Source)
        at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(Unknown Source)
        at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(Unknown Source)
        at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
        at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
        at javax.naming.InitialContext.init(Unknown Source)
        at javax.naming.InitialContext.<init>(Unknown Source)
        at javax.naming.directory.InitialDirContext.<init>(Unknown Source)
        at ConnectActiveDirectory.main(ConnectActiveDirectory.java:39)
Caused by: java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(Unknown Source)
        at com.sun.net.ssl.internal.ssl.InputRecord.readFully(Unknown Source)
        at com.sun.net.ssl.internal.ssl.InputRecord.read(Unknown Source)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)

        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.waitForClose(Unknown Sourc
e)
        at com.sun.net.ssl.internal.ssl.HandshakeOutStream.flush(Unknown Source)

        at com.sun.net.ssl.internal.ssl.Handshaker.kickstart(Unknown Source)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.kickstartHandshake(Unknown
 Source)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Un
known Source)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(Unknown Source
)
        at com.sun.net.ssl.internal.ssl.AppOutputStream.write(Unknown Source)
        at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
        at java.io.BufferedOutputStream.flush(Unknown Source)
        at com.sun.jndi.ldap.Connection.writeRequest(Unknown Source)
        at com.sun.jndi.ldap.Connection.writeRequest(Unknown Source)
        at com.sun.jndi.ldap.LdapClient.ldapBind(Unknown Source)
        ... 13 more

El código que estoy usando es

import java.util.Hashtable;
import javax.naming.*;
import javax.naming.directory.*;

public class ConnectActiveDirectory {

    public static void main(String[] args) throws NamingException {
        Hashtable env = new Hashtable();
        env.put(Context.SECURITY_AUTHENTICATION, "simple");
        env.put(Context.SECURITY_PRINCIPAL,"[email protected]");
        env.put(Context.SECURITY_CREDENTIALS, "password");
        env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
        env.put(Context.PROVIDER_URL, "ldaps://172.16.12.4:636/cn=Users,dc=mysite,dc=com");
        try{
            java.io.InputStream in = new java.io.FileInputStream("C:\\client.crt");
            java.security.cert.Certificate c = java.security.cert.CertificateFactory.getInstance("X.509").generateCertificate(in);
            java.security.KeyStore ks = java.security.KeyStore.getInstance("JKS");
            ks.load(null);
            if (!ks.containsAlias("alias ldap")) {
                ks.setCertificateEntry("alias ldap", c);
            }
            java.io.OutputStream out = new java.io.FileOutputStream("C:\\keystorefile.jks");
            char[] kspass = "changeit".toCharArray();
            ks.store(out, kspass);
            out.close();        
        }catch(Exception e){
            e.printStackTrace();
        }
        System.setProperty("javax.net.ssl.trustStore", "C:\\keystorefile.jks");
        DirContext ctx = new InitialDirContext(env);
        NamingEnumeration enm = ctx.list("");
        while (enm.hasMore()) {
            System.out.println(enm.next());
        }
        ctx.close();
    }
}

¿Estoy haciendo algún error?

¿Dónde puedo obtener un buen tutorial para hacer la conexión SSL con Active Directory?

hacehttp://confluence.atlassian.com/display/CROWD/Configuring+an+SSL+Certificate+for+Microsoft+Active+Directory ¿El sitio tiene los pasos correctos para crear y conectar el directorio activo con ssl?

¿Podría alguien en por favor ayudarme.

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