C:\>ftp 10.0.0.1
Connected to 10.0.0.1.
220 Serv-U FTP Server v6.4 for WinSock ready...
User (10.0.0.2:(none)): 1234
331 User name okay, need password.
Password:
230 User logged in, proceed.
ftp> dir
200 PORT Command successful.
150 Opening ASCII mode data connection for /bin/ls.
Aborting any active data connections...
Aborting any active data connections...
Connection closed by remote host.
就卡在150 Opening ASCII mode data connection for /bin/ls.,一直没反应,要ctrl+c取消