4.2 vsftpd 服务程序

4.2 vsftpd 服务程序

1）匿名开放模式：：最不安全的一种认证模式，任何人都可以无须密码验证而直接登录到FTP服务器。

2）本地用户模式：通过Linux系统本地的账户密码信息进行认证的模式，风险较大。

3）虚拟用户模式：：更安全的一种认证模式，它需要为FTP服务单独建立用户数据库文件，虚拟出用来进行密码验证的账户信息，这些账户信息在服务器系统中实际上是不存在，仅供FTP服务程序进行认证使用。

2.Linux客户机安装ftp客户端工具

[root@dsrw ~]# dnf install ftp
Updating Subscription Management repositories.
Unable to read consumer identity
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
AppStream                                        43 MB/s | 5.3 MB     00:00    
-BaseOS                                          31 MB/s | 2.2 MB     00:00    
Last metadata expiration check: 0:00:01 ago on Tue 20 Dec 2022 11:47:54 AM CST.
Dependencies resolved.
================================================================================
 Package       Arch             Version               Repository           Size
================================================================================
Installing:
 ftp           x86_64           0.17-78.el8           AppStream            70 k

Transaction Summary
================================================================================
Install  1 Package

Total size: 70 k
Installed size: 112 k
Is this ok [y/N]: y
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                        1/1 
  Installing       : ftp-0.17-78.el8.x86_64                                 1/1 
  Running scriptlet: ftp-0.17-78.el8.x86_64                                 1/1 
  Verifying        : ftp-0.17-78.el8.x86_64                                 1/1 
Installed products updated.

Installed:
  ftp-0.17-78.el8.x86_64                                                        

Complete!

3.win7客户机安全FlashFXP