Please suggest me some utility or application, using which i want to test referral settings done.

I want to test cross forest referenced reference. Among two DNS say 1 firstDNS.com user([email protected]) 2 SecondDNS.com user([email protected])

Below java code written to test active directory server setting.

public  void authenticateUser(String user, String password, String domain) throws AuthenticationException, NamingException {

    List<String> ldapServers = findLDAPServersInWindowsDomain("first.com");

    if (ldapServers.isEmpty())
        throw new NamingException("Can't locate an LDAP server (try  nslookup type=SRV _ldap._tcp." + "first.com"+ ")");

    Hashtable<String, String> props = new Hashtable<String, String>();
    String principalName = "testUserFirst"+ "@" + "First.com";
    props.put(Context.SECURITY_PRINCIPAL, principalName);
    props.put(Context.SECURITY_CREDENTIALS, password);
    props.put(Context.REFERRAL,"follow");
    //props.put(Context.SECURITY_AUTHENTICATION, "anonymous");
    Integer count = 0;
    for (String ldapServer : ldapServers) {
        try {
            count++;
            DirContext ctx = LdapCtxFactory.getLdapCtxInstance("ldap://" + ldapServer, props);
            SearchControls searchCtls = new SearchControls();

            //Specify the attributes to return
            String returnedAtts[]={"sn","givenName","mail"};
            searchCtls.setReturningAttributes(returnedAtts);

            //Specify the search scope
            searchCtls.setSearchScope(SearchControls.SUBTREE_SCOPE);

            //specify the LDAP search filter
            String searchFilter = "(&(objectClass=user)(sAMAccountName="
                    testUserSecond)(userPassword=usertest@3))"; 

            //Specify the Base for the search
            String searchBase = "DC=second,DC=com";
            //initialize counter to total the results
            int totalResults = 0;


            // Search for objects using the filter
            NamingEnumeration<SearchResult> answer = ctx.search(searchBase, searchFilter, searchCtls);

            return;
        } catch (CommunicationException e) { // this is what'll happen if one of the domain controllers is unreachable
            if (count.equals(ldapServers.size())) {
                // we've got no more servers to try, so throw the CommunicationException to indicate that we failed to reach an LDAP server
                throw e;
            }
        }
    }
}

private  List<String> findLDAPServersInWindowsDomain(String domain) throws NamingException {

    List<String> servers = new ArrayList<String>();
    Hashtable<String, String> env = new Hashtable<String, String>();
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.dns.DnsContextFactory");
    env.put("java.naming.provider.url", "dns://");
    DirContext ctx = new InitialDirContext(env);

    Attributes attributes = ctx.getAttributes("_ldap._tcp." + domain, new String[] { "SRV" }); // that's how Windows domain controllers are registered in DNS
    Attribute a = attributes.get("SRV");
    for (int i = 0; i < a.size(); i++) {
        String srvRecord = a.get(i).toString();
        // each SRV record is in the format "0 100 389 dc1.company.com."
        // priority weight port server (space separated)
        servers.add(srvRecord.split(" ")[3]);
    }
    ctx.close();
    return servers;
}