centos6.8下配置vsftp

Posted 2020-12-30 cfas

一、安装VSFTP

 

# yum -y install vsftpd

注意提升权限：

 

 

#su root

二、配置vsftpd.conf 文件

 

 

1.  
   [[email protected] ~]# vi /etc/vsftpd/vsftpd.conf
2.  
    
3.  
   # Example config file /etc/vsftpd/vsftpd.conf
4.  
   #
5.  
   # The default compiled in settings are fairly paranoid. This sample file
6.  
   # loosens things up a bit, to make the ftp daemon more usable.
7.  
   # Please see vsftpd.conf.5 for all compiled in defaults.
8.  
   #
9.  
   # READ THIS: This example file is NOT an exhaustive list of vsftpd options.
10.  
    # Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd‘s
11.  
    # capabilities.
12.  
    #
13.  
    # Allow anonymous FTP? (Beware - allowed by default if you comment this out).
14.  
    #anonymous_enable=YES
15.  
    #
16.  
    # Uncomment this to allow local users to log in.
17.  
    local_enable=YES
18.  
    #
19.  
    # Uncomment this to enable any form of FTP write command.
20.  
    write_enable=YES
21.  
    #
22.  
    # Default umask for local users is 077. You may wish to change this to 022,
23.  
    # if your users expect that (022 is used by most other ftpd‘s)
24.  
    local_umask=022
25.  
    #
26.  
    # Uncomment this to allow the anonymous FTP user to upload files. This only
27.  
    # has an effect if the above global write enable is activated. Also, you will
28.  
    # obviously need to create a directory writable by the FTP user.
29.  
    #anon_upload_enable=YES
30.  
    #
31.  
    # Uncomment this if you want the anonymous FTP user to be able to create
32.  
    # new directories.
33.  
    #anon_mkdir_write_enable=YES
34.  
    #
35.  
    # Activate directory messages - messages given to remote users when they
36.  
    # go into a certain directory.
37.  
    dirmessage_enable=YES
38.  
    #
39.  
    # The target log file can be vsftpd_log_file or xferlog_file.
40.  
    # This depends on setting xferlog_std_format parameter
41.  
    xferlog_enable=YES
42.  
    #
43.  
    # Make sure PORT transfer connections originate from port 20 (ftp-data).
44.  
    connect_from_port_20=YES
45.  
    #
46.  
    # If you want, you can arrange for uploaded anonymous files to be owned by
47.  
    # a different user. Note! Using "root" for uploaded files is not
48.  
    # recommended!
49.  
    #chown_uploads=YES
50.  
     
51.  
    #chown_username=whoever
52.  
    #
53.  
    # The name of log file when xferlog_enable=YES and xferlog_std_format=YES
54.  
    # WARNING - changing this filename affects /etc/logrotate.d/vsftpd.log
55.  
    #xferlog_file=/var/log/xferlog
56.  
    #
57.  
    # Switches between logging into vsftpd_log_file and xferlog_file files.
58.  
    # NO writes to vsftpd_log_file, YES to xferlog_file
59.  
    xferlog_std_format=YES
60.  
    #
61.  
    # You may change the default value for timing out an idle session.
62.  
    idle_session_timeout=600
63.  
    #
64.  
    # You may change the default value for timing out a data connection.
65.  
    data_connection_timeout=120
66.  
    # It is recommended that you define on your system a unique user which the
67.  
    # ftp server can use as a totally isolated and unprivileged user.
68.  
    #nopriv_user=ftpsecure
69.  
    #
70.  
    # Enable this and the server will recognise asynchronous ABOR requests. Not
71.  
    # recommended for security (the code is non-trivial). Not enabling it,
72.  
    # however, may confuse older FTP clients.
73.  
    #async_abor_enable=YES
74.  
    #
75.  
    # By default the server will pretend to allow ASCII mode but in fact ignore
76.  
    # the request. Turn on the below options to have the server actually do ASCII
77.  
    # mangling on files when in ASCII mode.
78.  
    # Beware that on some FTP servers, ASCII support allows a denial of service
79.  
    # attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
80.  
    # predicted this attack and has always been safe, reporting the size of the
81.  
    # raw file.
82.  
    # ASCII mangling is a horrible feature of the protocol.
83.  
    ascii_upload_enable=YES
84.  
    ascii_download_enable=YES
85.  
     
86.  
    #
87.  
    # You may fully customise the login banner string:
88.  
    ftpd_banner=Welcome to lightnear FTP service.
89.  
    #
90.  
    # You may specify a file of disallowed anonymous e-mail addresses. Apparently
91.  
    # useful for combatting certain DoS attacks.
92.  
    #deny_email_enable=YES
93.  
    # (default follows)
94.  
    #banned_email_file=/etc/vsftpd/banned_emails
95.  
    #
96.  
    # You may specify an explicit list of local users to chroot() to their home
97.  
    # directory. If chroot_local_user is YES, then this list becomes a list of
98.  
    # users to NOT chroot().
99.  
    chroot_local_user=YES
100.  
     #chroot_list_enable=YES
101.  
     # (default follows)
102.  
     #chroot_list_file=/etc/vsftpd/chroot_list
103.  
     #
104.  
     # You may activate the "-R" option to the builtin ls. This is disabled by
105.  
     # default to avoid remote users being able to cause excessive I/O on large
106.  
     # sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
107.  
     # the presence of the "-R" option, so there is a strong case for enabling it.
108.  
     ls_recurse_enable=YES
109.  
     #
110.  
     # When "listen" directive is enabled, vsftpd runs in standalone mode and
111.  
     # listens on IPv4 sockets. This directive cannot be used in conjunction
112.  
     # with the listen_ipv6 directive.
113.  
     listen=YES
114.  
     #
115.  
     # This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
116.  
     # sockets, you must run two copies of vsftpd with two configuration files.
117.  
     # Make sure, that one of the listen options is commented !!
118.  
     #listen_ipv6=YES
119.  
      
120.  
     pam_service_name=vsftpd
121.  
     userlist_enable=YES
122.  
     userlist_deny=NO
123.  
     local_root=/var/public_root
124.  
     tcp_wrappers=YES
125.  
     use_localtime=YES

 

 

三、增加FTP账号

 

1.  
   [[email protected] ~]# useradd ftpuser -s /sbin/nologin
2.  
   [[email protected] ~]# passwd ftpuser

ftpuser为账户名，passwd的作用为重设ftpuser的密码。

 

四、编辑user_list文件，允许cent用户访问

# vi /etc/vsftpd/user_list

1.  
   # vsftpd userlist
2.  
   # If userlist_deny=NO, only allow users in this file
3.  
   # If userlist_deny=YES (default), never allow users in this file, and
4.  
   # do not even prompt for a password.
5.  
   # Note that the default vsftpd pam config also checks /etc/vsftpd/ftpusers
6.  
   # for users that are denied.
7.  
   root
8.  
   bin
9.  
   daemon
10.  
    adm
11.  
    lp
12.  
    sync
13.  
    shutdown
14.  
    halt
15.  
    mail
16.  
    news
17.  
    uucp
18.  
    operator
19.  
    games
20.  
    nobody
21.  
    ftpuser

五、建立我们的根目录，并设置访问权限

 

 

1.  
   # mkdir /var/public_root
2.  
   # chown -R cent /var/public_root
3.  
   # chmod -R 755 /var/public_root

六、开启vsftpd服务

 

 

1.  
   # service vsftpd start
2.  
   Starting vsftpd for vsftpd: [ OK ]

七、开启21端口

 

 

#vi /etc/sysconfig/iptables 

在上面有行22 -j ACCEPT ，在下面照打一遍，但是把22改成21。改完之后，重启iptables。

 

 

#service iptables restart 

 

八、修改selinux

 

 

#getsebool -a | grep ftp 

执行上面命令，可以看到

 

 

1.  
   ....
2.  
   allow_ftpd_full_access off
3.  
   ....
4.  
   ....
5.  
   ftp_home_dir off

将这两个权限都打开

 

1.  
   #setsebool -P allow_ftpd_full_access 1
2.  
   #setsebool -P ftp_home_dir 1

重启下vsftpd

 

 

#service vsftpd restart 

 

设置成默认开启。

# chkconfig vsftpd on