Forefront TMG vs java和php(ftp)

Question

我在ForeFront TMG 7.0和公共远程ftp服务器后面有一台电脑.已安装TMG客户端.Windows防火墙已关闭.防病毒:McAfee病毒扫描企业版(8.8)+ AntySpyware Enterprize(8.8)+无插件.防病毒测试开启和关闭.

它无法通过Java和Php连接到服务器.Filezilla,explorer.exe和Go-written程序连接没有问题.

对于Java,我得到ConnectionRefused错误:

java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at org.apache.commons.net.SocketClient.connect(SocketClient.java:182)
    at org.apache.commons.net.SocketClient.connect(SocketClient.java:203)

无论我如何尝试通过Java连接:

• Apache FTP客户端(主动/被动 - 本地/远程/两者)
• Apache FTPS客户端(所有varians active | passive)
• Sauron FTP客户端(相同)
• 套接字套接字=新套接字(主机,21);

Semetimes它在等待5分钟后拖出连接超时.而错误是超时异常.所有varians都使用直接连接,全局代理,ftp代理,http代理及其所有组合进行测试.所有变体都通过IP和主机名进行测试.

也无法连接的Php代码示例:

<?php

  $host = "ftphost";
  $connect = ftp_connect($host,21);
  if(!$connect)
  {
    echo("Error: $host");
    exit;
  }
  else
  {
    echo("Cheers: $host");  
  }

?>

但filezilla连接没有问题.Explorer连接没有问题.Go-written程序连接没有问题.

有什么想法可以阻止java和php？如何确定阻止JRE和Apache的策略或程序设置？

Answer 1

您可以尝试使用 PHP 脚本来调试该问题，如下所示：

<?php
$host = "xx.xx.xx.xx";
$ftpUser = "annonymous";
$ftpPass = null;
$checkPort = @fsockopen($host, 21, $errno, $errstr, 10);
if($checkPort!==false){
    echo "can able to connect ftp server";
    $conn_id = ftp_connect($host);
    if($conn_id!==false){
    echo "\n Ftp server available and connected trying to logged in";
        $loginStatus = ftp_login($conn_id, $ftpUser, $ftpPass);
        if($loginStatus!==false){
            echo "\n Connected to ftp";
        } else {
            echo "\n Please check credentials";
        }
    }
} else {
    echo "server can't reach to ftp server";
}
?>