Connection closed by foreign host

barrettyin

telnet时：
     [root@SongliServer root]# telnet localhost 21
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.

ftp时：
[root@SongliServer root]# ftp localhost
Connected to localhost (127.0.0.1).
421 Service not available, remote server has closed connection

前几天还好好的，不知今天吃了什么药，就是连不上？是哪个环节出了问题？

wind521

对方可能用什么方式拒绝了，如firewall

土鳖虫

我的服务器是一台代理服务器。请大虾赐教，我从哪个方面入手解决这个问题呢？

wolfg

什么ftp服务器软件？
看看log