CentOS 7安装配置FTP服务器

ftp详细参数查看，可以使用命令 man 5 vsftpd.conf

CentOS 7下FTP服务器的安装配置。

假设我们有以下要求

路径	权限	备注
/ftp/open	公司所有人员包括来宾均可以访问	只读
/ftp/private	仅允许Alice、Jack、Tom三个人访问	Alice、Jack只允许下载， Tom可以上传均使用虚拟账户

安装FTP

//使用yum安装
# yum -y install ftp vsftpd
//或者使用rpm安装以下两个包
ftp-0.17-66.el7.x86_64
vsftpd-3.0.2-9.el7.x86_64
//另外需要安装db包，用来加密虚拟用户的账户信息
//这个包在centos7中默认已经安装了
# rpm -qf /usr/bin/db_load
libdb-utils-5.3.21-17.el7_0.1.x86_64

配置# mkdir /ftp/open

做几个测试文件
# echo opentest > /ftp/open/open.txt
# echo filetest > /tmp/filetest1.txt

# touch /ftp/open/anontest.txt
//查看配置文件所在路径
# rpm -ql vsftpd
/etc/logrotate.d/vsftpd
/etc/pam.d/vsftpd
/etc/vsftpd/ftpusers
/etc/vsftpd/user_list
/etc/vsftpd/vsftpd.conf

# cd /etc/vsftpd/
//备份原有配置文件
# cp vsftpd.conf vsftpd.conf.origin

//创建密码明文文件
# vi/etc/vsftpd/vftpuser.txt
alice
P@ssw0rd
jack
P@ssw0rd
tom
P@ssw0rd

//根据明文创建密码DB文件
# db_load -T -t hash -f /etc/vsftpd/vftpuser.txt \
/etc/vsftpd/vftpuser.db

//查看密码数据文件
# file /etc/vsftpd/vftpuser.db
/etc/vsftpd/vftpuser.db: Berkeley DB (Hash, version9, native byte-order)

//创建vftpd的guest账户
# useradd -d /ftp/private -s /sbin/nologin vftpuser

# vi /etc/pam.d/vsftpd
将auth及account的所有配置行行均注释掉，添加如下内容：
auth required pam_userdb.so db=/etc/vsftpd/vftpuser
account required pam_userdb.sodb=/etc/vsftpd/vftpuser
//打开配置文件
# vi /etc/vsftpd/vsftpd.conf
//在最后添加
anon_root=/ftp/open
virtual_use_local_privs=YES
guest_enable=YES
guest_username=vftpuser
chroot_local_user=YES
allow_writeable_chroot=YES
//设置自动启动
# systemctl enable vsftpd
ln -s'/usr/lib/systemd/system/vsftpd.service''/etc/systemd/system/multi-user.target.wants/vsftpd.service'

# systemctlstart vsftpd

//查看目前的状态
# systemctl status vsftpd
vsftpd.service - Vsftpd ftp daemon
Loaded:loaded (/usr/lib/systemd/system/vsftpd.service; enabled)
Active:active (running) since Mon 2014-08-11 19:57:12 CST; 22h ago
Main PID:12733 (vsftpd)
CGroup:/system.slice/vsftpd.service
a””a”12733 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf

systemd[1]: Starting Vsftpd ftp daemon...
systemd[1]: Started Vsftpd ftp daemon.
vsftpd[12738]: pam_userdb(vsftpd:auth): user'alice' granted access
vsftpd[12753]: pam_userdb(vsftpd:auth): user 'jack'granted access
systemd[1]: Started Vsftpd ftp daemon.

测试

//测试匿名账户
# ftp localhost
Trying ::1...
Connected to localhost (::1).
220 (vsFTPd 3.0.2)
Name(localhost:root): anonymous
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
229 Entering Extended Passive Mode (|||61057|).
150 Here comes the directory listing.
-rw-r--r-- 1 0 0 9 Aug 11 11:45 open.txt
226 Directory send OK.
ftp> lcd/tmp
Local directory now /tmp
ftp> get open.txt
local: open.txt remote: open.txt
229 Entering Extended Passive Mode (|||64276|).
150 Opening BINARY mode data connection foropen.txt (9 bytes).
226 Transfer complete.
9 bytes received in 0.000895 secs(10.06 Kbytes/sec)
ftp> bye
221 Goodbye.

//测试本地账户
# ftp localhost
Trying ::1...
Connected to localhost (::1).
220 (vsFTPd 3.0.2)
Name(localhost:root): alice
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
229 Entering Extended Passive Mode (|||21750|).
150 Here comes the directory listing.
226 Directory send OK.
ftp> !ls /tmp
filetest1.txt open.txt systemd-private-9xPN7y vmware-fonts0 vmware-installer1 vmware-root vmware-tools-distrib
ks-script-_Yi85R SAMBA.docx vmware-config0 vmware-installer0 vmware-installer2 vmware-root-2117481760 yum.log
ftp> lcd /tmp
Local directory now /tmp
ftp> put filetest1.txt
local: filetest1.txt remote: filetest1.txt
229 Entering Extended Passive Mode (|||65399|).
150 Ok to send data.
226 Transfer complete.
9 bytes sent in 5.9e-05 secs (152.54 Kbytes/sec)
ftp> bye
221 Goodbye.