问题[proftpd](unix)

我在 centos 6 上安装proftp或pureftp时遇到困难。我遵循了典型的说明（或者），就像这样

# Add EPL repository
rpm -iUvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

# Install
yum install proftpd

# Alternatively
yum install pure-ftpd

结果是一样的

Loaded plugins: auto-update-debuginfo, fastestmirror, refresh-packagekit, security
Setting up Install Process
Loading mirror speeds from cached hostfile
 * base: centos.mirroring.pulsant.co.uk
 * extras: mirrors.clouvider.net
 * updates: centos.mirroring.pulsant.co.uk
No package proftpd available.
Error: Nothing to do

或者视情况而定

No package pure-ftpd available.

一个简单的问题，通过这种配置，我允许匿名 ftp 用户。

ServerName          "ProFTPD Default Installation"
ServerType          standalone
DefaultServer           on
Port                2121
Umask               022
MaxInstances            30
User                ftp
Group               ftp
SystemLog           /var/log/proftpd.log
TransferLog         /var/log/xferlog
PassivePorts 49152 65535
UseFtpUsers off
<Directory /*>
  AllowOverwrite        on
</Directory>
  <Limit LOGIN>
    AllowUser ftp
    AllowUser anonymous
    DenyAll
  </Limit>
<Anonymous ~ftp>
  RequireValidShell     off
  User              ftp
  Group             ftp
  # 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            50
  # We want 'welcome.msg' displayed at login, and '.message' displayed
  # in each newly chdired directory.
  DisplayLogin          welcome.msg
  DisplayChdir          .message
  # Limit WRITE everywhere in the anonymous chroot
  <Limit WRITE>
    DenyAll
  </Limit>
  # An upload directory that allows storing files but not retrieving
  # or creating directories.
</Anonymous>

但是使用

ftp localhost 21

它要求输入密码我的问题是：如何完全禁用用户登录以只允许匿名？我想要这样的答案

"sorry ftp server is only anonymous"