vsftp问题“227 Entering Passive Mode”

①昨天测试防火墙 #iptables -P INPUT DROP   ②再配置规则，使21与20端口能经过 #iptables  -I INPUT -p tcp --sport 21 -j ACCEPT #iptables -I INPUT  -p tcp --sport 20 -j ACCEPT   ③而后访问ftp服务遇到问题 #ftp localhost Connected to localhost.localdomain. 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 (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 227 Entering Passive Mode (127,0,0,1,34,109) 》》》》出现问题，停着不动了《《《《   想了好久，解决以下： 登录ftp后 先要 ftp> passive             （查看被动模式状态） Passive mode  on. 要改成off才正常 ftp> passive               （一样的命令关闭） Passive mode  off   如今 ftp> ls 200 PORT command successful. Consider using PASV. 150 Here comes the directory listing. drwxr-xr-x    4 0        0            4096 Sep 08 01:37 pub 226 Directory send OK. ftp> cd pub 250 Directory successfully changed. 一切正常     本文出自 http://linux2009.blog.51cto.com/656605/248731