Detailed introduction to building ftp, nfs, and ssh servers in Linux

1, ftp server setup (using vsftpd tool)

Function: upload and download

## of files

# Server side:

Modify the configuration file , the configuration file directory: /etc/vsftpd.conf, modify the allow anonymous access, specify anonymous access Directory and other operations can be modified according to your own needs.

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　loy sudo service vsftpd [[start]] Two situations:

　　①、Real-name user login: ftp + ip (server), and then enter the username and password respectively.

##　　　②. Anonymous user login: ftp + ip (server), then write anonymous as the user name, no need to enter the password, just press Enter.

However, if you log in anonymously, the administrator will generally specify the root directory for anonymous login. That is, after logging in anonymously, you can only access the specified directory. To specify the anonymous user root directory, the administrator only needs to modify /etc/vsftpd.conf and add anon_root=/home/cczhao/MyFtp/.

But the above two login methods can only operate a single file, such as uploading or downloading a single file, but cannot operate folders, or operate multiple files at once. The following method can solve the above problem Disadvantages.

## Brief introduction: software installation---- sudo apt-get install lftp; anonymous login: lftp + ip (server), then enter the user name to log in, and the password is still just press Enter. Operation: Upload or download a single file or put/get, upload or download multiple files mput/mget, download the entire directory and its subdirectories with the mirror command, upload the entire directory and its subdirectories with the command mirror -R.

2. Build nfs server - through the tool nfs-kernel-server

The nfs server is similar to a shared folder under Windows. This function is implemented here through mounting.

First, install the software: sudo apt-get install nfs-kernel-server Server: First create a shared directory, which will be All shared files or folders are placed in this directory; then modify the configuration file, the path is /etc/exports, and add /home/cczhao/NfsShare *(rw,sync) at the end of the file. Here * means where to share, which is an IP network segment. You can also write the corresponding IP network segment as needed (such as 192.168.60.*); rw is the permission given to the visitor, and sync means real-time

Update

to local disk. Finally, restart the service: sudo service nfs-kernel-server restart.

Client: Mount the shared folder to /mnt. The command is mount IP: mounted directory/mnt (mount 192.168.130.*:/home/cczhao/NfsShare /mnt).

3, ssh Server setup

Function: Remotely operate the server

Server side: Install ssh, that is, sudo apt-get install openssh-server

Client:

Remote login

：ssh userName@serverIP

#Exit

Login: logout

Here is an introduction to scp (super copy), which requires openssh-server to be installed and can be copied between different hosts. The operation is as follows: scp -r target host@target host IP: the absolute path of the file on the target host and the absolute path to be copied to the local host.

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