Build an ftp server in linux and an ftp server in linux

Build an ftp server in linux and an ftp server in linux

1. Online Installation

   Yum install vsftpd pam * db4 *-y

   Use the command to configure vsftp as a system service

   Chkconfig -- level 35 vsftpd on

2. 2

   Configure the host of the vsftpd service

   Useradd vsftpdadmin-s/sbin/nologin-M

   This vsftpdadmin is only used to replace the root user and does not need to be logged on.

3. 3

   Create an ftp virtual host account

   Useradd vsftpuser-s/sbin/nologin-M

   This ftpuser only has virtual account hosts and does not need to be logged on.

4. Before configuring vsftpd. conf, back up the original

   Vi/etc/vsftpd. conf

   Anonymous_enable = YES --> anonymous_enable = NO// Anonymous access is not allowed. The default value is allow.

   Chroot_list_enable = YES --> chroot_list_enable = YES// FTP users are not allowed to leave their home directories.

   Add

   # Set the path for storing the configuration file of the virtual user's personal Vsftp. That is to say, the specified directory stores the configuration files of each Vsftp virtual user. Note that these configuration files must be the same as the virtual user name.

   User_config_dir =/etc/vsftpd/vconf/userlocal

   # This step is very important. Remember this step. Create a folder based on this configuration

   # Modifying the port number

   Ftp_data_port = 4040

   Reverse_lookup_enable = NO

   Pasv_enable = yes

   Pasv_min_port = 48790

   Pasvanderbilt max_port = 48800

   Listen_port = 48796 # You can configure the port based on your actual situation, or use the default port. However, for the sake of security, configure according to your actual situation

5. Create a virtual User File

   Mkdir/etc/vsftpd/vconf

   Touch/etc/vsftpd/vonf/vir_user

6. Create a virtual user

   Vi/etc/vsftpd/vonf/vir_user

   Virtualuser// User Name

   12345678// Password

7. Generate Database

   Db_load-T-t hash-f/etc/vsftpd/vconf/vir_user/etc/vsftpd/vconf/vir_user.db

8. Set Database File Access Permissions

   Chmod 600/etc/vsftpd/vconf/vir_user

   Chmod 600/etc/vsftpd/vconf/vir_user.db

9. Modify/etc/pam. d/vsftpd

   Auth sufficient pam_userdb.so db =/etc/vsftpd/vconf/vir_user

   Account sufficient pam_userdb.so db =/etc/vsftpd/vconf/vir_user

   (To use both system users and virtual users, change required to sufficient)

10. Configure user_config_dir =/etc/vsftpd/vconf/userlocal according to step 4.

    Create a userlocal folder

    Mkdir/etc/vsftpd/vconf/userlocal

11. Create a file based on the username created in Step 6

    For example, if the account created in Step 6 is virtualuser, a new virtualuser file is created.

    Touch/etc/vsftpd/conf/userlocal/virtualuser

12. Edit the file path accessed by the user

    Vi/etc/vsftpd/conf/userlocal/virtualuser

    Enter the following

    Local_root = // the root directory of the website to be specified. For example, the folder www.baidu.com is/www/baidu.

    Anonymous_enable = NO # prohibit anonymous user access

    Write_enable = YES # Enable write permission

    Local_umask = 022 # permission mask for uploaded files

    Anon_upload_enable = NO # disable anonymous download

    Anon_mkdir_write_enable = NO # disable anonymous Folder creation

    Idle_session_timeout = 60 # The automatic session close time is 60 minutes.

    Data_connection_timeout = 120 # data Delay Time

    Max_clients = 10 # maximum number of connections

    Max_per_ip = 5 # the same ip address allows five IP addresses to be connected at the same time.

    Local_max_rate = 1048576 # Object User transmission speed limit, in B/s. 0 indicates no limit

13. After the configuration is complete, restart the vsftpd service: service vsftpd restart.

    View the system Port Status: netstas-tulnp. If you can see that port 48796 is being called by vsftpd, the startup is successful.