CentOS7下搭建FTP服务器

xiaoxiao2021-02-28  86

1、安装vsftpd

首先查看你是否安装了vsftpd

[root@localhost ~]# rpm -q vsftpd

vsftpd-3.0.2-10.el7.x86_64 (显示也就安装成功了!)


如果没有则安装vsftpd

[root@localhost ~]# yum install -y vsftpd

安装完成后可以查看到安装的目录

[root@localhost ~]# whereis vsftpd

vsftpd: /usr/sbin/vsftpd /etc/vsftpd /usr/share/man/man8/vsftpd.8.gz


查看vsftpd服务的状态

[root@localhost ~]# systemctl status vsftpd.service

vsftpd.service - Vsftpd ftp daemon  Loaded: loaded (/usr/lib/systemd/system/vsftpd.service; enabled; vendor preset: disabled)    Active: active (running) since 三 2017-07-05 14:29:53 CST; 3s ago Process: 3951 ExecStart=/usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf (code=exited, status=0/SUCCESS)  Main PID: 3953 (vsftpd)    CGroup: /system.slice/vsftpd.service ├─3953 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf ├─3963 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf └─3964 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf

7月 05 14:29:53 localhost.localdomain systemd[1]: Starting Vsftpd ftp daemon… 7月 05 14:29:53 localhost.localdomain systemd[1]: Started Vsftpd ftp daemon.


开启vsftpd服务

[root@localhost ~]# systemctl start vsftpd.service

设置vsftpd服务开机自启

[root@localhost ~]# systemctl enable vsftpd.service (或者:[root@localhost ~]# chkconfig vsftpd on)

2、配置vsftpd.conf文件

[root@localhost ~]# vi /etc/vsftpd/vsftpd.conf # Uncomment this to allow the anonymous FTP user to upload files. This only # has an effect if the above global write enable is activated. Also, you will # obviously need to create a directory writable by the FTP user. # When SELinux is enforcing check for SE bool allow_ftpd_anon_write, allow_ftpd_full_access #anon_upload_enable=YES # # Uncomment this if you want the anonymous FTP user to be able to create # new directories. #anon_mkdir_write_enable=YES # # Activate directory messages - messages given to remote users when they # go into a certain directory. dirmessage_enable=YES # # Activate logging of uploads/downloads. xferlog_enable=YES # # Make sure PORT transfer connections originate from port 20 (ftp-data). connect_from_port_20=YES # # If you want, you can arrange for uploaded anonymous files to be owned by # a different user. Note! Using "root" for uploaded files is not # recommended! #chown_uploads=YES #chown_username=whoever # # You may override where the log file goes if you like. The default is shown # below. #xferlog_file=/var/log/xferlog # # If you want, you can have your log file in standard ftpd xferlog format. # Note that the default log file location is /var/log/xferlog in this case. xferlog_std_format=YES # # You may change the default value for timing out an idle session. idle_session_timeout=600 # # You may change the default value for timing out a data connection. data_connection_timeout=120 # # It is recommended that you define on your system a unique user which the # ftp server can use as a totally isolated and unprivileged user. #nopriv_user=ftpsecure # # Enable this and the server will recognise asynchronous ABOR requests. Not # recommended for security (the code is non-trivial). Not enabling it, # however, may confuse older FTP clients. #async_abor_enable=YES # # By default the server will pretend to allow ASCII mode but in fact ignore # the request. Turn on the below options to have the server actually do ASCII # mangling on files when in ASCII mode. # Beware that on some FTP servers, ASCII support allows a denial of service # attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd # predicted this attack and has always been safe, reporting the size of the # raw file. # ASCII mangling is a horrible feature of the protocol. ascii_upload_enable=YES ascii_download_enable=YES # # You may fully customise the login banner string: ftpd_banner=Welcome to blah FTP service. # # You may specify a file of disallowed anonymous e-mail addresses. Apparently # useful for combatting certain DoS attacks. #deny_email_enable=YES # (default follows) #banned_email_file=/etc/vsftpd/banned_emails # # You may specify an explicit list of local users to chroot() to their home # directory. If chroot_local_user is YES, then this list becomes a list of # users to NOT chroot(). # (Warning! chroot'ing can be very dangerous. If using chroot, make sure that # the user does not have write access to the top level directory within the # chroot) chroot_local_user=YES #chroot_list_enable=YES # (default follows) #chroot_list_file=/etc/vsftpd/chroot_list # # You may activate the "-R" option to the builtin ls. This is disabled by # default to avoid remote users being able to cause excessive I/O on large # sites. However, some broken FTP clients such as "ncftp" and "mirror" assume # the presence of the "-R" option, so there is a strong case for enabling it. ls_recurse_enable=YES # # When "listen" directive is enabled, vsftpd runs in standalone mode and # listens on IPv4 sockets. This directive cannot be used in conjunction # with the listen_ipv6 directive. listen=YES # # This directive enables listening on IPv6 sockets. By default, listening # on the IPv6 "any" address (::) will accept connections from both IPv6 # and IPv4 clients. It is not necessary to listen on *both* IPv4 and IPv6 # sockets. If you want that (perhaps because you want to listen on specific # addresses) then you must run two copies of vsftpd with two configuration # files. # Make sure, that one of the listen options is commented !! #listen_ipv6=YES pam_service_name=vsftpd userlist_enable=YES userlist_deny=NO local_root=/var/public_root tcp_wrappers=YES use_localtime=YES allow_writeable_chroot=YES

3、添加FTP账户

这里设置的账户名为“test”,密码为“123456”

[root@localhost ~]# useradd test -s /sbin/nologin [root@localhost ~]# passwd 123456

4、编辑user_list文件,允许test用户访问FTP

[root@localhost ~]# vi /etc/vsftpd/user_list # vsftpd userlist # If userlist_deny=NO, only allow users in this file # If userlist_deny=YES (default), never allow users in this file, and # do not even prompt for a password. # Note that the default vsftpd pam config also checks /etc/vsftpd/ftpusers # for users that are denied. root bin daemon adm lp sync shutdown halt mail news uucp operator games nobody test ~ ~ ~ ~ "/etc/vsftpd/user_list" 21L, 366C

5、建根目录,并设置访问权限

[root@localhost ~]# mkdir /var/public_root [root@localhost ~]# chown -R test /var/public_root [root@localhost ~]# chmod -R 755 /var/public_root

6、防火墙设置

如果系统启用了防火墙和SELinux,那么还要做以下配置(默认情况下CentOS7是使用firewall和selinux的,不在使用iptables)

防火墙添加FTP服务

[root@localhost ~]# firewall-cmd --permanent --zone=public --add-service=ftp [root@localhost ~]# firewall-cmd --reload

设置SELinux

[root@localhost ~]# getsebool -a | grep ftp [root@localhost ~]# setsebool -P ftpd_full_access on

或者修改配置文件彻底关闭selinux,需要重启机器

[root@localhost ~]# vi /etc/selinux/config # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=disabled # SELINUXTYPE= can take one of three two values: # targeted - Targeted processes are protected, # minimum - Modification of targeted policy. Only selected processes are protected. # mls - Multi Level Security protection. SELINUXTYPE=targeted ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ "/etc/selinux/config" 14L, 546C

7、重启vsftpd服务器

[root@localhost ~]# systemctl stop vsftpd.service [root@localhost ~]# systemctl start vsftpd.service [root@localhost ~]# systemctl status vsftpd.service

卸载vsftpd的方法

如果配置出错需要卸载vsftpd,在卸载之前先停止vsftpd

[root@localhost ~]# rpm -aq vsftpd

vsftpd-3.0.2-21.el7.x86_64 (此处是查找vsftpd的返回结果)


用rpm -e 查找结果 进行删除就ok了

[root@localhost ~]# rpm -e vsftpd-3.0.2-21.el7.x86_64

warning: /etc/vsftpd/user_list saved as /etc/vsftpd/user_list.rpmsave warning: /etc/vsftpd/ftpusers saved as /etc/vsftpd/ftpusers.rpmsave   #删除时将备份vsftp的用户列表文件


检查是否卸载了vsftpd,进行stop及start操作

[root@localhost ~]# systemctl stop vsftpd.service

vsftpd: unrecognized service   #找不到vsftpd

[root@localhost ~]# systemctl start vsftpd.service

vsftpd: unrecognized service   #找不到vsftpd

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