FTP,TELNET用户控制（转）
作者：小州
man ftpaccess 可以找到 restricted-uid 的参数，那只要/etc/ftpaccess 文件内加入： restricted-uid * 即可。此方式适用于 wu-ftp 2.5 or above 的版本。
如何让一个一般的用户只能 ftp 上来
作者：Michael
要让一个一般的用户只能 ftp 上来，但是却不能使用 telnet 至这部机器 只需要做下面两步： 1、修改/etc/passwd，将用户对应一行最后的login shell 改成 /bin/true 2、编辑/etc/shells ，在最后加一行 /bin/true
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