[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  /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. for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf. 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 . You may wish to change this to ,
# if your users expect that ( is used by most other ftpd's)
local_umask=
#
# 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 parameter
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port  (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_file
xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
idle_session_timeout=
#
# You may change the default value for timing out a data connection.
data_connection_timeout=
#
# 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 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=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. 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=YES

pam_service_name=vsftpd
userlist_enable=YES
anon_other_write_enable=YES
tcp_wrappers=YES
anon_root=/opt/test_ftp
guest_enable=YES
guest_username=wolfyftp
virtual_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 --> on
allow_ftpd_full_access --> off

开启 anon_write 和full_access

setsebool allow_ftpd_anon_write  

etsebool allow_ftpd_full_access 

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。