Quickly and simply set up FTP server, and achieve public network access through intranet [no need for public IP]

Here is a free and open source FTP Software FileZilla Example , Quick and easy to build FTP The server , And do intranet penetration , Realize access to the intranet under the external network environment FTP The server .

Intranet penetration tool , Here we use cpolar Intranet through , Support http/https/tcp agreement , There is no need for the public network IP, No need to enter the router configuration , Unlimited flow , Support permanent free use .

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Using tools ：

• FileZilla The server 、 client
• cpolar Intranet through

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First step ： install FileZilla The server

Download address ：https://www.filezilla.cn/download

• Note that the administrator login password should be set here
  

• Generate certificate thumbprint

• installation is complete

• Enter the management interface , Connect server

• Use the administrator password , Sign in FileZilla server

• Login successful , Get into FileZilla server backstage

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The second step ： To configure cpolar Intranet through

Register and install cpolar Intranet through 【 Due to the need to configure fixed ftp Public address , Therefore, it is necessary to cpolar Upgrade to professional package 】

https://www.cpolar.com/

1. reserve FTP Fixed public network address

1.1 Sign in cpolar backstage , Get into reserve page

1.2 choice Reserved FTP Address , Keep a fixed FTP Public address

• region ： choice China perhaps China vip
• describe ： Customizable
  

1.3 FTP Address reservation succeeded

Due to penetration FTP More than penetration 21 port , You also need to penetrate the data port , So the reservation succeeds ftp After the address , In addition to generating a signaling port （ The public network corresponds to the local 21 port ） outside , A data port segment will also be generated .

2. Configure this machine cpolar client

2.1 Browser access 127.0.0.1:9200, Log in locally cpolar web-ui Management interface

2.2 Create a tunnel

Left instrument cluster —— Tunnel management —— Create a tunnel

• Tunnel name ： Customize , Don't repeat
• agreement ： choice ftp
• Local address ：21
• Port type ： Select fixed ftp port
• Reserved ftp Address ： Enter in cpolar The successful address reserved in the background

2.3 Tunnel created successfully

After the tunnel is created successfully , You can see ftp The tunnel is active .

Left instrument cluster —— state —— Online tunnel list , You can see ftp Generated by tunnel 4 A tunnel , Corresponding to signaling port and data port respectively ：

Signaling port （ftp:// Starting address ）：

• ftp://1.tcp.cpolar.cn:25124

Corresponding data port （data:// Starting address ）（ All cases are 25125——25127）：

• data://1.tcp.cpolar.cn:25125
• data://1.tcp.cpolar.cn:25126
• data://1.tcp.cpolar.cn:25127

2.4 Resolve the domain name to IP Address

because ftp server I only know it in the library ip Address , Cannot use domain name address , Therefore, it is necessary to cpolar The generated public domain name 1.tcp.cpolar.cn It can be interpreted as IP Address . Open the command line , Enter the command

ping 1.tcp.cpolar.cn

After successful parsing , A corresponding to the domain name will be generated IP Address

1.tcp.cpolar.cn-----→61.160.213.50

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The third step ： Set up FileZilla The server

1、 take FileZilla The server is configured in passive mode

1.1 open FileZilla, Click on Set up

• Check usecustom port range
• Set the data port , Configured with cpolar Provide consistent (25125——25127)
• use the following host： Fill in the resolved cpolar Public network IP Address （61.160.213.50）
  
  FileZilla Server passive mode configuration succeeded

2、 Add users and configure permissions

2.1 New users , For this example user01

2.2 Set user password to login , And the root directory files that can be accessed 、 jurisdiction

• choice require a password to log in
• Virtual path Virtual path ： Fill in /
• native path The local path ： Fill in user01 The root directory file path that users can access
  
  
  

2.3 FTP SERVER Server side configuration complete

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Step four ： install FileZilla client , Quick connect

Download address ：https://www.filezilla.cn/download

1. All the way to the default installation

2. FileZilla Client installed successfully

3. Quickly connect to FTP The server

• host ： Input cpolar The generated public domain name address 1.tcp.cpolar.cn
• user name ：user01
• password ：user01 Password
• port ： Fill in the signaling port 25124

4. Successful connection