前段时间碰到一位牛B的人物,帮我修正了vsftpd基于PAM认证的问题.今天又碰到N个问题,比如Access denied. 和403错误,无法上传文件等等之类的错误.于是,只好请这个高人再次出马,帮忙再次修正.很感谢这位牛B人物.在利益大于一切的这个X蛋的社会,还能为了咱们这群小菜鸟去分析N个文件..这种精神实在是值得佩服.
	
	针对我自己本身出现的问题,将高人与我的QQ聊天记录整理了一份,然后再加上实际的操作.终于让我大彻大悟.现在与大家狠狠的分享这位高人的成果.
	
	用户上传文件访问出现403或者Access denied. 
	
	解答:这个主要是权限问题,在用户vsftpd.conf中加上:anon_umask=022或者anon_umask=133,022指755权限.133指644权限,再将给权限给该文件chmod 644 XX.php或者chmod 644 name
	
	用户无法上传文件,出现550或者是553错误 
	
	可能是用户组有问题.比如你的网站用www这个用户来访问,那么就将vsftpd.conf中的guest_username=XXX改成www
	
	另外贴出来我的vsftpd的配置文件: 
复制代码 代码如下:
	
	# 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=NO
	#
	# 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 parameter
	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
	#
	# 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=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().
	#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 whith two configuration files.
	# Make sure, that one of the listen options is commented !!
	#listen_ipv6=YES
	pam_service_name=vsftpd
	<strong>user_config_dir=/etc/vsftpd/user_config_dir /*基于PAM认证用到的*/
	userlist_enable=YES
	tcp_wrappers=YES
	guest_enable=YES
	guest_username=www /*注意这里.很有可能是因为你的用户导致你的权限出问题*/
	local_root=/home/www
	anon_umask=022 /*这里是刚才上面提到的权限问题 */
	</strong>
	
	如果你已经是使用了RAM认证的.那么你可以参考下我的单个用户的配置.文件如下
复制代码 代码如下:
	
	<strong>anon_world_readable_only=NO
	write_enable=YES
	anon_upload_enable=YES
	anon_other_write_enable=YES
	local_root=/var/public
	anon_mkdir_write_enable=YES
	</strong>
