WinSock 2.0 -- OpenSSL 0.9.7g 11 Apr 2005
[左] 正在连接到 58.221.30.34 -> IP=58.221.30.34 PORT=21
[左] 已连接到 58.221.30.34
[左] 220-Registered [flash8tim]
[左] 220 Serv-U FTP Server v6.3 for WinSock ready...
[左] USER UID=223
[左] 331 User name okay, need password.[CE]
[左] PASS (hidden)
[左] 530 Not logged in, unauthorized IP address.(bbsftp v3.1CE)
[左] 连接已失败
这是怎么回事,我是按照默认的IP设置来,而且IP也没办法修改