[CentOs7]搭建ftp服务器(3)——上传，下载，删除，重命名，新建文件夹

摘要

上篇文章介绍了如何为ftp添加虚拟用户，本篇将继续实践如何上传，下载文件。

上传

使用xftp客户端上传文件，如图所示

此时上传状态报错，查看详情

从错误看出是应为无法创建文件造成的。那么我们就要修改ftp服务器的配置了。

授权

chmod 755 /opt/test_ftp  // 给予文件夹的操作权限

一般创建一个ftp 用户，作为管理员只希望它只能访问其自己的所属目录的，是不会让他选择其他目录的。

设置ftp用户的权限

在安装好ftp时，在 /etc/vsftpd目录下可以看到vsftpd的配置文件vsftpd.conf

进入目录

cd /etc/vsftpd 

查看列表

ls

编辑配置文件

vi  vsftpd.conf

将用户(一般指虚拟用户)限制在自家目录
修改配置文件中,这样用户就只能访问自己家的目录了:

chroot_local_user=yes

重启ftp

service vsftpd restart

使用xftp客户端，进行尝试。

 ftp配置文件

# Example config file /etc/vsftpd/vsftpd.conf## The default compiled in settings are fairly paranoid. This sample file# loosens things up a bit, to make the ftp daemon more usable.# Please see vsftpd.conf.5 for all compiled in defaults.## READ THIS: This example file is NOT an exhaustive list of vsftpd options.# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's# capabilities.## Allow anonymous FTP? (Beware - allowed by default if you comment this out).anonymous_enable=YES## Uncomment this to allow local users to log in.local_enable=YES## Uncomment this to enable any form of FTP write command.write_enable=YES## Default umask for local users is 077. You may wish to change this to 022,# if your users expect that (022 is used by most other ftpd's)local_umask=022## 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.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## The target log file can be vsftpd_log_file or xferlog_file.# This depends on setting xferlog_std_format parameterxferlog_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## The name of log file when xferlog_enable=YES and xferlog_std_format=YES# WARNING - changing this filename affects /etc/logrotate.d/vsftpd.log#xferlog_file=/var/log/xferlog## Switches between logging into vsftpd_log_file and xferlog_file files.# NO writes to vsftpd_log_file, YES to xferlog_filexferlog_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=YESascii_download_enable=YES## You may fully customise the login banner string:ftpd_banner=Welcome to 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().chroot_local_user=YESchroot_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. To listen on IPv4 and IPv6# sockets, you must run two copies of vsftpd with two configuration files.# Make sure, that one of the listen options is commented !!#listen_ipv6=YESpam_service_name=vsftpduserlist_enable=YESanon_other_write_enable=YEStcp_wrappers=YESanon_root=/opt/test_ftpguest_enable=YESguest_username=wolfyftpvirtual_use_local_privs=YES

设置权限

使用命令

getsebool -a|grep ftp

getsebool，列出所有selinux bool数值清单列表与内容。

allow_ftpd_anon_write --> onallow_ftpd_full_access --> off

开启 anon_write 和full_access

setsebool allow_ftpd_anon_write  1

etsebool allow_ftpd_full_access 1

重启ftp服务

service vsftpd restart

测试

在本地使用xftp客户端进行上传，下载，删除，重命名，操作。如图

总结

设置权限，感觉只需配置文件中配置对了，然后将full_access 设置为1 就可以了。