• RHEL 5.2 安装 FTP服务器(vsftp)


    此文为转载,没有技术难度,不过因为作者写的比较规范,所以转载,以便参考。
    说明:系统镜像:[红帽企业.Linux.5].rhel-5.2-server-i386-dvd.iso
    1、vsftpd安装
    [root@linux01 ~]# mkdir /media/cdrom
    [root@linux01 ~]# mount -t iso9660 /dev/cdrom /media/cdrom # 挂载镜像
    mount: block device /dev/cdrom is write-protected, mounting read-only
    [root@linux01 ~]# cd /media/cdrom/Server # 进入软件包目录
    [root@linux01 Server]#
    [root@linux01 Server]# rpm -qa | grep ^vsftpd # 查询相关已经安装的软件包
    [root@linux01 Server]# ls | grep vsftpd* # 查询当前路径下安装包
    vsftpd-2.0.5-12.el5.i386.rpm
    [root@linux01 Server]# rpm -ivh vsftpd-2.0.5-12.el5.i386.rpm # 安装软件包 i安装 v输出详细信息 h进度
    warning: vsftpd-2.0.5-12.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186
    Preparing... ########################################### [100%]
    1:vsftpd ########################################### [100%]
    [root@linux01 Server]# rpm -qa | grep ^vsftpd # 再次查询相关已经安装的软件包
    vsftpd-2.0.5-12.el5
    [root@linux01 Server]#cd
    [root@linux01 ~]# rpm -ql vsftpd | grep etc # 查询etc中与vsftpd相关的文件
    /etc/logrotate.d/vsftpd.log
    /etc/pam.d/vsftpd
    /etc/rc.d/init.d/vsftpd
    /etc/vsftpd
    /etc/vsftpd/ftpusers
    /etc/vsftpd/user_list
    /etc/vsftpd/vsftpd.conf
    /etc/vsftpd/vsftpd_conf_migrate.sh
    [root@linux01 ~]#
    2、、/etc/vsftpd/vsftpd.conf文件配置
    [root@linux01 Server]# cat /etc/vsftp/vsftpd.conf # 读取原文,默认配置
    cat: /etc/vsftp/vsftpd.conf: No such file or directory
    [root@linux01 Server]# cat /etc/vsftpd/vsftpd.conf
    # 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 # 允许匿名登录
    #
    # Uncomment this to allow local users to log in.
    local_enable=YES # 允许本地帐户登录
    #
    # Uncomment this to enable any form of FTP write command.
    write_enable=YES # 开放对本地用户的写权限
    #
    # 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 # 本地用户的文件生成掩码
    #
    # 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 # 显示目录下的.message
    #
    # Activate logging of uploads/downloads.
    xferlog_enable=YES # 启用上传和下载日志
    #
    # Make sure PORT transfer connections originate from port 20 (ftp-data).
    connect_from_port_20=YES # 启用FTP数据端口
    #
    # 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 # 使用标准的ftpd xferlog日志格式
    #
    # 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 # FTP服务器处于独立启动模式(相对于受xinnetd管理的启动模式)
    #
    # 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 # PAM认证服务的配置文件名称,/etc/pam.d/vsftpd
    userlist_enable=YES # FTP将检查userlist_file(/etc/vsftpd/user_list)中用户是否可以访问FTP服务器
    tcp_wrappers=YES # 使用tcp_wrappers作为主机访问控制方式,/etc/host.allow和/etc/hosts.deny。
    [root@linux01 Server]#
    3、/etc/vsftpd.user_list文件配置
    [root@linux01 ~]# cd /etc/vsftpd
    root@linux01 vsftpd]# ls
    ftpusers user_list vsftpd.conf vsftpd_conf_migrate.sh
    [root@linux01 vsftpd]# cat user_list
    # vsftpd userlist
    # If userlist_deny=NO, only allow users in this file
    # If userlist_deny=YES (default), never allow users in this file, and
    # do not even prompt for a password.
    # Note that the default vsftpd pam config also checks /etc/vsftpd/ftpusers
    # for users that are denied.
    root
    bin
    daemon
    adm
    lp
    sync
    shutdown
    halt
    mail
    news
    uucp
    operator
    games
    nobody
    [root@linux01 vsftpd]#
    (当vsftp.conf配置文件中包括以下配置时,user_list中用户帐号禁止登录配置:
    userlist_enable=YES # 注意大小写
    userlist_deny=YES
    当vsftp.conf配置文件中包括以下配置时,只有user_list中用户帐号允许登录配置:注意考虑ftpusers文件用户
    userlist_enable=YES # 注意大小写
    userlist_deny=NO
    )
    [root@linux01 vsftpd]# cat ftpusers
    # Users that are not allowed to login via ftp
    root
    bin
    daemon
    adm
    lp
    sync
    shutdown
    halt
    mail
    news
    uucp
    operator
    games
    nobody
    [root@linux01 vsftpd]#
    4、匿名用户登录目录
    匿名用户将进入/var/ftp目录
    5、vsftpd服务启动与关闭
    root@linux01 vsftpd]# ls -l /etc/init.d/vsftpd # vsftpd启动脚本文件
    -rwxr-xr-x 1 root root 1778 Dec 13 2007 /etc/init.d/vsftpd
    [root@linux01 vsftpd]#
    [root@linux01 vsftpd]# chkconfig --list vsftpd # 查看
    vsftpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
    [root@linux01 vsftpd]# chkconfig --level 35 vsftpd on # 设置在35模式下随机启动
    [root@linux01 vsftpd]# chkconfig --list vsftpd # 检查查看
    vsftpd 0:off 1:off 2:off 3:on 4:off 5:on 6:off
    [root@linux01 vsftpd]#
    [root@linux01 vsftpd]# service vsftpd start # 启用服务
    Starting vsftpd for vsftpd: [ OK ]
    [root@linux01 vsftpd]# service vsftpd stop # 停止服务
    Shutting down vsftpd: [ OK ]
    [root@linux01 vsftpd]# service vsftpd restart # 重启服务
    Shutting down vsftpd: [FAILED]
    Starting vsftpd for vsftpd: [ OK ]
    [root@linux01 vsftpd]# service vsftpd status # 查看服务状态
    vsftpd (pid 13071) is running...
    [root@linux01 vsftpd]#
    6、测试帐号登录
    [root@redhatCLI ~]# ftp 192.168.7.2
    ftp: connect: No route to host # 防火墙阻止登录
    ftp>bye # 退出ftp
    [root@linux01 vsftpd]# service iptables stop # 在服务器上关闭防火墙,在客户端上也要关闭防火墙
    Flushing firewall rules: [ OK ]
    Setting chains to policy ACCEPT: nat filter [ OK ]
    Unloading iptables modules: [ OK ]
    [root@linux01 vsftpd]#
    匿名帐号登录(可以登录)
    [root@redhatCLI ~]# ftp 192.168.7.2 #在客户端上登录ftp服务器
    Connected to 192.168.7.2.
    220 (vsFTPd 2.0.5)
    530 Please login with USER and PASS.
    530 Please login with USER and PASS.
    KERBEROS_V4 rejected as an authentication type
    Name (192.168.7.2:root): anonymous # 使用匿名帐号登录
    331 Please specify the password.
    Password: # 密码为空
    230 Login successful.
    Remote system type is UNIX.
    Using binary mode to transfer files.
    ftp> dir
    227 Entering Passive Mode (192,168,7,2,159,53)
    150 Here comes the directory listing.
    drwxr-xr-x 2 0 0 4096 Dec 13 2007 pub
    226 Directory send OK.
    ftp> pwd
    257 "/"
    ftp> bye
    221 Goodbye.
    [root@redhatCLI ~]#
    服务器本地帐号登录(默认不能登录)
    [root@redhatCLI ~]# ftp 192.168.7.2
    Connected to 192.168.7.2.
    220 (vsFTPd 2.0.5)
    530 Please login with USER and PASS.
    530 Please login with USER and PASS.
    KERBEROS_V4 rejected as an authentication type
    Name (192.168.7.2:root): test01
    331 Please specify the password.
    Password:
    500 OOPS: cannot change directory:/home/test01 # 其他帐号同样不能登录,与user_list、vsftdpd.conf等无关
    Login failed.
    ftp> bye
    服务器本地帐号不能登录的修复处理
    root@linux01 vsftpd]# setsebool ftpd_disable_trans 1 # 服务器本地帐号不能登录的修复处理,
    # disable SELinux protection of the ftp daemon
    # 有什么不会的后果就不知了。
    [root@linux01 vsftpd]# service vsftpd restart # 重启服务
    Shutting down vsftpd: [ OK ]
    Starting vsftpd for vsftpd: [ OK ]
    [root@linux01 vsftpd]#
    [root@redhatCLI ~]# ftp 192.168.7.2 # 服务器本地帐号登录
    Connected to 192.168.7.2.
    220 (vsFTPd 2.0.5)
    530 Please login with USER and PASS.
    530 Please login with USER and PASS.
    KERBEROS_V4 rejected as an authentication type
    Name (192.168.7.2:root): test01
    331 Please specify the password.
    Password:
    230 Login successful.
    Remote system type is UNIX.
    Using binary mode to transfer files.
    ftp> dir
    227 Entering Passive Mode (192,168,7,2,43,10)
    150 Here comes the directory listing.
    226 Directory send OK.
    ftp> pwd
    257 "/home/test01"
    ftp> cd / # 进入根目录
    250 Directory successfully changed.
    ftp> pwd
    257 "/" # 不安全啊
    ftp> cd /home # 可以进入/home目录
    250 Directory successfully changed.
    ftp> pwd
    257 "/home
    ftp> mkdir 123
    550 Create directory operation failed.
    ftp> bye
    221 Goodbye.
    [root@redhatCLI ~]#
    7、禁锢登录用只在宿主目录中
    [root@linux01 vsftpd]# vi vsftpd.conf
    # 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.
    #
    ……………………………..
    pam_service_name=vsftpd
    userlist_enable=YES
    tcp_wrappers=YES
    chroot_local_user=YES # 添加此行,来禁锢登录用只在宿主目录中
    "vsftpd.conf" 117L, 4419C written
    [root@linux01 vsftpd]# service vsftpd restart # 重启服务
    Shutting down vsftpd: [ OK ]
    Starting vsftpd for vsftpd: [ OK ]
    [root@linux01 vsftpd]#
    测试
    [root@redhatCLI ~]# ftp 192.168.7.2
    Connected to 192.168.7.2.
    220 (vsFTPd 2.0.5)
    530 Please login with USER and PASS.
    530 Please login with USER and PASS.
    KERBEROS_V4 rejected as an authentication type
    Name (192.168.7.2:root): test01
    331 Please specify the password.
    Password:
    230 Login successful.
    Remote system type is UNIX.
    Using binary mode to transfer files.
    ftp> pwd
    257 "/"
    ftp> cd /home # 不能使用cd进入非根目录了
    550 Failed to change directory.
    ftp> bye
    221 Goodbye.
    [root@redhatCLI ~]#
    8、配置FTP服务器的虚拟用户(虚拟帐号对系统更安全)
    (1)建立虚拟用户口令库文件
    [root@linux01 ~]# touch /etc/vsftpd/logins.txt
    [root@linux01 ~]# vi /etc/vsftpd/logins.txt
    mike # 奇数行为用户名
    pwabc # 偶数行为密码
    john
    pw1234
    ~
    ~
    "/etc/vsftpd/logins.txt" 4L, 23C written
    [root@linux01 ~]# cat /etc/vsftpd/logins.txt
    mike
    pwabc
    john
    pw1234
    [root@linux01 ~]#
    (2)生成vsftpd的认证文件
    root@linux01 Server]# db # db + 两次空格键
    dbconverter-2 dbus-cleanup-sockets dbus-launch dbus-send
    dbus-binding-tool dbus-daemon dbus-monitor dbus-uuidgen
    [root@linux01 Server] # 可以看出没有db-_load命令,默认系统没有安装时,要手工安装了
    [root@linux01 Server]# ls | grep ^db # 挂载好光驱后,进入到rpm包文件目录,查看db有关软件包
    db4-4.3.29-9.fc6.i386.rpm
    db4-devel-4.3.29-9.fc6.i386.rpm
    db4-java-4.3.29-9.fc6.i386.rpm
    db4-tcl-4.3.29-9.fc6.i386.rpm
    db4-utils-4.3.29-9.fc6.i386.rpm
    dbus-1.0.0-7.el5.i386.rpm
    dbus-devel-1.0.0-7.el5.i386.rpm
    dbus-glib-0.70-5.i386.rpm
    dbus-glib-devel-0.70-5.i386.rpm
    dbus-python-0.70-7.el5.i386.rpm
    dbus-x11-1.0.0-7.el5.i386.rpm
    [root@linux01 Server]#
    [root@linux01 Server]# rpm -ivh db4-4.3.29-9.fc6.i386.rpm
    [root@linux01 Server]# rpm -ivh db4-devel-4.3.29-9.fc6.i386.rpm
    [root@linux01 Server]# rpm -ivh db4-java-4.3.29-9.fc6.i386.rpm
    [root@linux01 Server]# rpm -ivh db4-tcl-4.3.29-9.fc6.i386.rpm
    [root@linux01 Server]# rpm -ivh db4-utils-4.3.29-9.fc6.i386.rpm # 之后实验好像装他就可以了
    [root@linux01 Server]# rpm -ivh dbus-1.0.0-7.el5.i386.rpm # 不知db_load是db4的哪个软件包,所以都安装了。
    [root@linux01 Server]# db # db + 两次空格键。嗨,有了,出来了吧。
    db_archive db_dump185 db_upgrade dbus-monitor
    db_checkpoint db_load dbus-binding-tool dbus-send
    dbconverter-2 db_printlog dbus-cleanup-sockets dbus-uuidgen
    db_deadlock db_recover dbus-daemon db_verify
    db_dump db_stat dbus-launch
    [root@linux01 Server]# cd
    root@linux01 ~]# db_load -T -t hash -f /etc/vsftpd/logins.txt /etc/vsftpd/vsftpd_login.db # 生成vsftpd的认证文件
    [root@linux01 ~]# file /etc/vsftpd/vsftpd_login.db # 查看文件类型
    /etc/vsftpd/vsftpd_login.db: Berkeley DB (Hash, version 8, native byte-order)
    [root@linux01 ~]# chmod 600 /etc/vsftpd/vsftpd_login.db # 设置文件只对root读写
    [root@linux01 ~]# ls -l /etc/vsftpd/vsftpd_login.db
    -rw------- 1 root root 12288 Jun 1 20:30 /etc/vsftpd/vsftpd_login.db
    [root@linux01 ~]#
    (3)建立虚拟用户所需的PAM配置文件
    [root@linux01 ~]# touch /etc/pam.d/vsftpd.vu # 新建文件
    [root@linux01 ~]# vi /etc/pam.d/vsftpd.vu # 编辑
    auth required /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
    account required /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
    ~
    ~
    "/etc/pam.d/vsftpd.vu" 2L, 141C written
    [root@linux01 ~]# cat /etc/pam.d/vsftpd.vu # 查验
    auth required /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
    account required /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
    [root@linux01 ~]#
    (4)建立虚拟用户及要访问的目录并设置权限
    [root@linux01 ~]# useradd -d /home/ftpsite virtual # 建立虚拟用户所需的目录及系统帐号
    [root@linux01 ~]# chmod 700 /home/ftpsite/ # 设置宿主目录的权限
    [root@linux01 ~]# ls -l /home/
    total 16
    drwx------ 3 virtual virtual 4096 Jun 1 20:39 ftpsite # 刚健的虚拟宿主目录,为所有虚拟用户使用
    drwx------ 3 test01 test01 4096 Jun 1 18:58 test01 # 之前的本地用户test01宿主目录
    [root@linux01 ~]#
    (5)设置vsftpd.conf配置文件
    [root@linux01 vsftpd]# cp vsftpd.conf vsftpd.conf_bake # 首先进入/etc/vsftpd目录,然后备份,以防有问题
    [root@linux01 vsftpd]# vi vsftpd.conf
    # Example config file /etc/vsftpd/vsftpd.conf
    #
    ………………………………..
    guest_enable=YES # 添加的内容
    guest_username=virtual # 添加的内容
    pam_service_name=vsftpd.vu # 添加的内容
    "vsftpd.conf" 120L, 4484C written
    [root@linux01 vsftpd]#
    (6)重启vsftpd服务
    root@linux01 vsftpd]# service vsftpd restart
    Shutting down vsftpd: [ OK ]
    Starting vsftpd for vsftpd: [ OK ]
    [root@linux01 vsftpd]#
    (7)测试虚拟用户帐号 (注意:虚拟帐号和本地用户帐号默认不可同时生效)
    root@linux01 vsftpd]# touch /home/ftpsite/afile # 建立也测试文件
    [root@linux01 vsftpd]# chown virtual.virtual /home/ftpsite/afile # 赋予权限
    [root@linux01 vsftpd]# ls -l /home/ftpsite
    total 4
    -rw-r--r-- 1 virtual virtual 0 Jun 1 20:53 afile
    [root@linux01 vsftpd]#
    [root@redhatCLI ~]# ftp 192.168.7.2
    Connected to 192.168.7.2.
    220 (vsFTPd 2.0.5)
    530 Please login with USER and PASS.
    530 Please login with USER and PASS.
    KERBEROS_V4 rejected as an authentication type
    Name (192.168.7.2:root): mike
    331 Please specify the password.
    Password:
    230 Login successful.
    Remote system type is UNIX.
    Using binary mode to transfer files.
    ftp> dir
    227 Entering Passive Mode (192,168,7,2,246,249)
    150 Here comes the directory listing.
    226 Transfer done (but failed to open directory).
    ftp>bye
    9、典型FTP服务器设置
    [root@linux01 Server]# cat /etc/vsftpd/vsftpd.conf
    # Example config file /etc/vsftpd/vsftpd.conf
    anonymous_enable=YES # 允许匿名登录
    local_enable=YES # 允许本地帐户登录
    .
    write_enable=YES # 开放对本地用户的写权限
    local_umask=022 # 本地用户的文件生成掩码
    #anon_upload_enable=YES # 匿名用户是否可以上传文件默认注释掉了
    #anon_mkdir_write_enable=YES # 匿名用户是否创建目录,默认注释掉了
    dirmessage_enable=YES # 显示目录下的.message
    xferlog_enable=YES # 启用上传和下载日志
    connect_from_port_20=YES # 启用FTP数据端口
    #chown_uploads=YES
    #chown_username=whoever
    #xferlog_file=/var/log/vsftpd.log
    xferlog_std_format=YES # 使用标准的ftpd xferlog日志格式
    #idle_session_timeout=600
    #data_connection_timeout=120
    #nopriv_user=ftpsecure
    #async_abor_enable=YES
    #ascii_upload_enable=YES
    #ascii_download_enable=YES
    #deny_email_enable=YES
    #banned_email_file=/etc/vsftpd/banned_emails
    #chroot_list_enable=YES
    #chroot_list_file=/etc/vsftpd/chroot_list
    #ls_recurse_enable=YES
    listen=YES # FTP服务器处于独立启动模式(相对于受xinnetd管理的启动模式)
    #listen_ipv6=YES
    pam_service_name=vsftpd # PAM认证服务的配置文件名称,/etc/pam.d/vsftpd
    userlist_enable=YES # FTP将检查userlist_file(/etc/vsftpd/user_list)中用户是否可以访问FTP服务器
    tcp_wrappers=YES # 使用tcp_wrappers作为主机访问控制方式,/etc/host.allow和/etc/hosts.deny。
    chroot_list_enable=YES # 禁锢用户在宿主目录中
    max_clients=100 # 限制客户端的最大连接数
    max_per_ip=5 # 同一ip与FTP服务器连接的最大连接数
    local_max_rate=500000 # 本地用户传输最大为500KB/s
    anon_max_rate=200000 # 匿名用户传输最大为200KB/s
    [root@linux01 Server]#
    ftp密码用户登录方式
    ftp://username:password@host:port可以以username为用户名,password为密码从端口port登录到host
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  • 原文地址:https://www.cnblogs.com/fangbo/p/1762150.html
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