设置quota，只要在ftpquotalimits表里设置一下就行了，这个表里的各个参数分别代表：
代码:
quotalimits表
name： - 用户帐号
quota type： - user, group, class, all (we use user)
per_session： - true or false (we use true)
limit_type： - 硬限制 or 软限制 (我们一般用硬限制)
bytes_in_avail： - 允许上传的字节数
bytes_out_avail： - 允许下载的字节数
bytes_xfer_avail： - 允许传输的字节数（包括上传/下载）
files_in_avail： - 允许上传的文件数
files_out_avail： - 允许下载的文件数
files_xfer_avail： - 允许传输的文件数（包括上传/下载）
建立系统相关用户或组:
1.创建proftpd服务运行的用户和用户组:
#pw groupadd ftpgrp -g 2001
#pw adduser ftpusr -u 2001 -g 2001 -d /usr/ftp/incoming -s
/sbin/nologin
2、创建匿名登陆用户映射的系统用户和用户组
#pw groupadd pubusers -g 2002
#pw adduser ftp -u 2002 -g 2001 -d /usr/ftp/incoming -s
/sbin/nologin
3、配置系统自启动proftpd服务
#ee /etc/rc.conf
proftpd_enable=”YES”
这样系统启动的时候会调用/usr/local/etc/rc.d/proftpd.sh脚本启动proftpd服务
4、监控和调试proftpd服务
#/usr/local/sbin/proftpd proftpd -n -d 5 -c
/usr/local/etc/proftpd.conf
这样在测试和连接ftp的时候，可以在主机上看到所有的proftpd运行信息
5、日志监控
#tail -f /var/log/proftpd.syslog
#tail -f /var/log/proftpd.transferlog
6、用户登陆后运行quote SITE QUOTA命令查看设置的磁盘限额信息
最后运行时出现的问题：
匿名登陆时总出现验证，用测试用户登陆出现错误：
FreeBSD# ftp 127.0.0.1
Connected to 127.0.0.1 (127.0.0.1).
500 FTP server shut down (going down at Tue Dec 19 20:00:00 2007)
-- please try again later.
ftp>
解决方法：
#rm -rf /etc/shutmsg
其它一些问题的处理：
Q：在本地ftp
localhost输入用户名、密码回车后。等很久才进入FTP Server
A：ftp 127.0.0.1
Q：在远程服务器上ftp
ip输入用户名、密码回车后。等很久才进入FTP Server
A：LDAPServer localhost 改为 LDAPServer 127.0.0.1
Q：登录Ftp Server 提示
530 Login incorrect.
Login failed.
A：在登录ProFTPD时加参数proftpd –d5
–n会输出调试信息。你可以在其中
找到答案。如果在调试信息中找到这一行no such user 'xxxx'
可能是与MySQL/OpenLDAP连接有问题。
Q:服务不能启动，显示主机名错误之类的提示。
A: ee /etc/hosts
加入一行:
本机ＩＰ地址 主机名
附： proftpd.conf
# This is a basic ProFTPD configuration file (rename it to
# 'proftpd.conf' for actual use. It establishes a
single server
# and a single anonymous login. It assumes that
you have a user/group
# "nobody" and "ftp" for normal operation and anon.
ServerName "Home
Download"
ServerType standalone
DefaultServer on
# Port 21 is the standard FTP port.
Port 21
# Umask 022 is a good standard umask to prevent new dirs and
files
# from being group and world writable.
Umask 022
# To prevent DoS attacks, set the maximum number of child
processes
# to 30. If you need to allow more than 30
concurrent connections
# at once, simply increase this value. Note that
this ONLY works
# in standalone mode, in inetd mode you should use an inetd
server
# that allows you to limit maximum number of processes per
service
# (such as xinetd).
MaxInstances 30
# Set the user and group under which the server will run.
User ftpusr
Group ftpgrp
RequireValidShell off
AllowStoreRestart on
UseReverseDNS off 【解决反应慢问题】
IdentLookups
off 【解决反应慢问题】
# To cause every FTP user to be "jailed" (chrooted) into their
home
# directory, uncomment this line.
DefaultRoot ~
# Normally, we want files to be overwriteable.
AllowOverwrite on
# Bar use of SITE CHMOD by default
<Limit SITE_CHMOD>
DenyAll
</Limit>
----------------------------------------------------
TransferRate STOR 500 user
upload
#[up-speed]
TransferRate RETR 500 user
homedown
#[down-speed]
PassivePorts 20000 20010
#[被模式开放的端口,防火墙那边也记着开启,否则直接点击网页下载是不可能的,下载工具不关闭"被动模式"将不能下载]
<Directory />
AllowOverwrite on #[断点续UP]
AllowStoreRestart on #[断点续DOWN]
#AllowForeignAddress on
<Limit All>
AllowAll
</Limit>
</Directory>
---------------------------------------------------------
# A basic anonymous configuration, no upload
directories. If you do not
# want anonymous users, simply delete this entire <Anonymous>
section.
<Anonymous /usr/ftp>
User ftp
Group pubusers
# We want clients to be able to login with
"anonymous" as well as "ftp"
UserAlias anonymous
ftp
# Limit the maximum number of anonymous
logins
MaxClients 10
# We want 'welcome.msg' displayed at login,
and '.message' displayed
# in each newly chdired directory.
DisplayLogin welcome.msg
DisplayFirstChdir .message
# Limit WRITE everywhere in the anonymous chroot
AuthAliasOnly on #[禁以用户名方式匿名登陆]
<Limit WRITE>
DenyAll
</Limit>
</Anonymous>
#
数据库联接的信息，proftpdb是数据库名，localhost是主机名，proftpd是连接数据库的用户名，
#proftpdb是密码
SQLConnectInfo proftpd@localhost proftpd ******
SQLAuthTypes Backend Plaintext
#SQLAuthenticate users* groups*
SQLUserInfo ftpusers userid passwd uid gid homedir shell
SQLGroupInfo ftpgroups groupname gid members
SQLAuthenticate users groups usersetfast groupsetfast
# 如果home目录不存在，则系统会根据它的home项新建一个目录
SQLHomedirOnDemand on
QuotaDirectoryTally on
# 磁盘限额单位 b"|"Kb"|"Mb"|"Gb"
QuotaDisplayUnits "Mb"
QuotaEngine on
QuotaLog "/var/log/quota.log"
# 打开磁盘限额信息，当登陆FTP帐户后，使用命令 "quote SITE QUOTA"
后可显示当前用#户的磁盘限额
QuotaShowQuotas on
SQLNamedQuery get-quota-limit SELECT "name, quota_type,
per_session, limit_type, bytes_in_avail, bytes_out_avail,
bytes_xfer_avail,files_in_avail, files_out_avail, files_xfer_avail
FROM quotalimits WHERE name = '%{0}' AND quota_type = '%{1}'"
SQLNamedQuery get-quota-tally SELECT "name, quota_type,
bytes_in_used, bytes_out_used, bytes_xfer_used, files_in_used,
files_out_used, files_xfer_used FROM quotatallies WHERE name =
'%{0}' AND quota_type = '%{1}'"
SQLNamedQuery update-quota-tally UPDATE "bytes_in_used =
bytes_in_used + %{0}, bytes_out_used = bytes_out_used + %{1},
bytes_xfer_used = bytes_xfer_used + %{2}, files_in_used =
files_in_used + %{3}, files_out_used = files_out_used + %{4},
files_xfer_used = files_xfer_used + %{5} WHERE name = '%{6}' AND
quota_type = '%{7}'" quotatallies
SQLNamedQuery insert-quota-tally INSERT "%{0}, %{1}, %{2}, %{3},
%{4}, %{5}, %{6}, %{7}" quotatallies
QuotaLimitTable sql:/get-quota-limit
QuotaTallyTable
sql:/get-quota-tally/update-quota-tally/insert-quota-tally