问ColdFusion版本9安全FTP -无法连接

EN

我正在寻找自动化的事情，目前正在手动进行。正在使用ftp客户端Filezilla执行手动处理。以下是指示：

In the Host field, type in the IP address: xx.xxx.xxx.xxx.
In the Port field, type in 990.
In the Servertype dropdown list, change it so that it reads 
 FTP over SSL/TLS (implicit encryption). (NOTE: On the Mac OSX 
 version this option will read FTPS – FTP over implicit TLS/SSL).
In the Logontype area, select Normal.
In the Username field, enter your username.
In the Password field, enter your password.

当我遵循这些指令时，我成功地连接了起来。这就是我在ColdFusion中尝试过的：

<cfftp action="open"
connection="abc"
secure = true
server="something valid"
port="990"
username="something valid" 
password="something valid">

这是错误消息：An error occurred while establishing an sFTP connection. Verify your connection attributes: username, password, server, fingerprint, port, key, connection, proxyServer, and secure (as applicable). Error: Session.connect: java.net.SocketTimeoutException: Read timed out.

当我移除港口装饰品时，结果没有变化。当我将用户名更改为无效时，我会得到一个稍微不同的错误：An error occurred while establishing an sFTP connection. Verify your connection attributes: username, password, server, fingerprint, port, key, connection, proxyServer, and secure (as applicable). Error: connection is closed by foreign host.

换句话说，超时被有意关闭所取代。

为了解决这个问题，我应该看什么？