windows – 200 PORT命令成功.考虑使用PASV. 425无法建立连接

我在Ubuntu 12.04 LTS中设置了FTP服务器.

现在,当我尝试通过命令行ftp.exe从Windows 7连接到FTP服务器时,我成功连接但我无法获取目录列表.我收到错误

200 PORT command successful. Consider using PASV.
425 Failed to establish connection.

在使用ls之前尝试使用passive命令.

从FTP客户端,要检查FTP服务器是否支持被动模式,请在登录后键入quote PASV.

以下是具有被动模式打开和关闭的vsftpd服务器的连接示例

vsftpd with pasv_enable = NO：

# ftp localhost
Connected to localhost.localdomain.
220 (vsFTPd 2.3.5)
Name (localhost:john): anonymous
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> quote PASV
550 Permission denied.
ftp>

vsftpd with pasv_enable = YES：

# ftp localhost
Connected to localhost.localdomain.
220 (vsFTPd 2.3.5)
Name (localhost:john): anonymous
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> quote PASV
227 Entering Passive Mode (127,1,173,104).
ftp>