public void proxy_test_auth2() throws IOException
{

String ntUsername = "andrshpa";
String ntPassword = "12wedfik";
String localMachineName = System.getenv("COMPUTERNAME");
String domainName = System.getenv("USERDOMAIN");
String proxyHost = "37.143.11.127";
int proxyPort = 65233;

NTCredentials ntCreds = new NTCredentials(ntUsername, ntPassword, localMachineName, domainName);

CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials( new AuthScope(proxyHost,proxyPort), ntCreds );

CloseableHttpClient httpclient = HttpClients.custom()
.setDefaultCredentialsProvider(credsProvider)
.setProxy(new HttpHost(proxyHost, proxyPort))
.setProxyAuthenticationStrategy(new ProxyAuthenticationStrategy())
.build();

    try {

        HttpGet httpget = new HttpGet("http://control456.ru/sample/save_post_get.php");

        System.out.println("Executing request " + httpget.getRequestLine());



        // Pass local context as a parameter
        CloseableHttpResponse response = httpclient.execute(httpget);


        System.out.println(response.getStatusLine().toString());


        try {

            System.out.println("----------------------------------------");
            System.out.println(response.getStatusLine());

        } finally {
            response.close();
        }

    } finally {
        httpclient.close();
    }

HTTP/1.0 407 Proxy Authentication Required