Centos5.5 vsftp虚拟账户无法登陆

Question

今天测试vsftp虚拟账户配置，到现在为止还没成功，问题是虚拟账户无法登陆，

查看日志  more /var/log/secure

Mar 23 14:42:26 localhost vsftpd: pam_unix(vsftpd:auth): authentication failure; logname= uid=0 euid=0 tty=ftp ruser=test rhost=192.168.14.24 
Mar 23 14:42:26 localhost vsftpd: pam_succeed_if(vsftpd:auth): error retrieving information about user test
Mar 23 14:44:29 localhost vsftpd: PAM unable to dlopen(/lib/security/pam_userdb.so)
Mar 23 14:44:29 localhost vsftpd: PAM [error: /lib/security/pam_userdb.so: wrong ELF class: ELFCLASS32]
Mar 23 14:44:29 localhost vsftpd: PAM adding faulty module: /lib/security/pam_userdb.so
Mar 23 14:44:29 localhost vsftpd: pam_listfile(vsftpd:auth): Couldn't open /etc/vsftpd/wdftp
Mar 23 14:44:29 localhost vsftpd: pam_unix(vsftpd:auth): check pass; user unknown
Mar 23 14:44:29 localhost vsftpd: pam_unix(vsftpd:auth): authentication failure; logname= uid=0 euid=0 tty=ftp ruser=test rhost=192.168.14.24 
Mar 23 14:44:29 localhost vsftpd: pam_succeed_if(vsftpd:auth): error retrieving information about user test

下面将我的配置过程写出来，望大家能帮我指正一下,也希望能给后来者一个提示,如有不详细处请回复：

1.环境VirtualBoax  Centos5.5（64位）,vsftp2.0.5

2.基础软件安装

 yum -y install vsftpd*
  yum -y install pam*
  yum -y install db4*

3.新建useradd wdftp -s  /sbin/nologin

4.新建虚拟账户用户文件

 vi /etc/vsftpd/vsftpd_login

test
123456
hello
123321ab

5.生成虚拟账户DB文件

db_load -T -t hash -f /etc/vsftpd/vsftpd_login  /etc/vsftpd/vsftpd_login.db 

6.新建虚拟账户目录/etc/vsftpd/vsftpd_user_conf，并将第4步中用户一一创建一个文件，其中test用户的配置如下，其它账户一样

local_root=/var/
anonymous_enable=NO
write_enable=YES
local_umask=022
anon_upload_enable=NO
anon_mkdir_write_enable=NO
idle_session_timeout=600
data_connection_timeout=120
max_clients=10
max_per_ip=5
local_max_rate=50000

7.修改vi /etc/pam.d/vsftpd

#%PAM-1.0
auth sufficient /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
account sufficient /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login

session    optional     pam_keyinit.so    force revoke
auth       required	pam_listfile.so item=user sense=deny file=/etc/vsftpd/wdftp onerr=succeed
auth       required	pam_shells.so
auth       include	system-auth
account    include	system-auth
session    include	system-auth
session    required     pam_loginuid.so

 

8.vsftpd.conf 配置

# 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=NO
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
anon_mkdir_write_enable=NO
#
# 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/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format
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=vsftpd
#
# 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_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
chroot_local_user=YES
pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
guest_enable=YES
guest_username=wdftp
virtual_use_local_privs=YES
user_config_dir=/etc/vsftpd/vsftpd_user_conf

 

9.重启service vsftpd restart
 

 

Answer 1

兄台，多谢。正是此问题。

Answer 2

太感谢你了  专门注册帐号 等待一小时 感谢你

Answer 3

觉得使用mysql建立帐号比较方便

Answer 4

1.建立系统帐户virtual, 不设立密码，加入ROOT组，SHELL为NOLOGIN,使不能SHELL登录系统。
useradd -d /var/www/html -s /sbin/nologin -g root virtual

2.ldd /usr/sbin/vsftpd
libpam.so.0 => /lib/libpam.so.0 (0x00d7b000)

3.rpm -qa db4
db4-devel-4.2.52-7.1
db4-4.2.52-7.1
db4-utils-4.2.52-7.1

4.建立一个/etc/vsftpd/users.txt的文件，单行为用户名，双行为密码.
upload
123456

5.db_load -T -t hash -f /etc/vsftpd/users.txt /etc/vsftpd_login.db
chmod 600 /etc/vsftpd_login.db

6.vi /etc/pam.d/ftp.virtual
auth required /lib/security/pam_userdb.so db=/etc/vsftpd_login
account required /lib/security/pam_userdb.so db=/etc/vsftpd_login

7.编写配置文件
guest_enable=YES
guest_username=virtual //这两行的意思是采用虚拟用户形式
anonymous_enable=NO //禁用匿名账户
virtual_use_local_privs=YES //虚拟用户和本地用户权限相同
local_umask=011
file_open_mode=0777
user_config_dir=/etc/vsftpd/vsftpd_user_conf //定义虚拟用户配置文件目录
local_enable=YES //PAM方式此处必须为YES
write_enable=NO //全局控制不可以上传
anon_upload_enable=NO //匿名用户不可以上传
xferlog_enable=YES //开启日志记录
xferlog_file=/var/log/vsftpd.log //日志存放文件位置
anon_mkdir_write_enable=NO //匿名用户不可以建目录
anon_other_write_enable=NO //匿名用户不可以修改
chroot_local_user=YES //不充许用户更改根目录
pam_service_name=ftp.virtual

8.vi /etc/vsftpd/vsftpd_user_conf/upload !!!注意：每行的等号前后都不要有空格，否则启动时会出现错误!!! 如（bad bool value in config file for:anon_world_readable_only）!!!!
local_root=/var/www/html
write_enable=YES
anon_world_readable_only=NO
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_other_write_enable=YES

 

参照一下，我配了没问题。

Answer 5

1. Mar 23 14:44:29 localhost vsftpd: PAM unable to dlopen(/lib/security/pam_userdb.so)   
2. Mar 23 14:44:29 localhost vsftpd: PAM [error: /lib/security/pam_userdb.so: wrong ELF class: ELFCLASS32]   
3. Mar 23 14:44:29 localhost vsftpd: PAM adding faulty module: /lib/security/pam_userdb.so   

先解决这个问题，把i386的包都去掉，只留下x86_64的相关包

Answer 6

引用来自#2楼“G”的帖子

selinux 呢? 可能被它给阻止掉了.

Answer 7

selinux 呢? 可能被它给阻止掉了.