网络环境:

  两个独立的内网环境,前端都有路由和防火墙的管控。要在这两个独立的内网使用ftp通过互联网进行通信。

  首先,ftp server 服务端口默认修改为:2100 数据端口修改为:21000

  将这两个内网服务器端口通过路由映射到公网端口。

  ftp server 使用的vsftpd的被动模式。

    被动模式:

      命令连接: 客户端大于1024端口 --> 服务器端21端口

      数据连接: 客户端大于1024端口 --> 服务器端被动端口

  我这里 FTP默认端口2100  数据端口设置为21000  客户端通过ftp命令连接出现如下情况。

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" 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客户端命令如下:

[root@localhost ~]# ftp (公网IP)
Connected to [公网IP] (公网IP).
(vsFTPd 2.2.)
Name ([公网IP]:root): ftp用户名
Please specify the password.
Password:
Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> dir
Entering Passive Mode (,,,,,).
ftp: connect: Connection timed out  # 这里无法查看数据,也就是数据端口无法连接,通过上面的连接查看,直接发送到10.0.10.5 2100 这样显示是无法连接内网IP的。
ftp>

通过以上事件,得知问题出在无法连接数据端口上。研究了很久,windows下通过ftp工具能够正常连接。但是cmd下ftp命令和linux下ftp命令均出现这种情况。

最后得知Linux 下 lftp同样可以进行ftp连接。于是就进行了尝试,结果如下:

aaarticlea/png;base64,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" alt="" />

可以看到这次,无论是命令连接还是数据连接socket都是正确的。

aaarticlea/png;base64,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" alt="" />

查看文件同样也OK了。 这算是踩了一个Linux ftp客户端使用的坑。

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