測試結(jié)果: YKNb59k  
WinSock 2.0 -- OpenSSL 0.9.7d 17 Mar 2004 GZ <nXU>  
[右] 正在連接到 218.66.102.120 -> IP=218.66.102.120 端口=21 DDWp4`CS|  
[右] 已連接到 218.66.102.120 )]3L/  
[右] 220 Serv-U FTP Server v6.1 for WinSock ready... ve6x/ PD  
[右] USER bbs.91.com >C:If0S4X  
[右] 331 User name okay, need password. ]uAS+shQ&  
[右] PASS (hidden) } +1'{B"I  
[右] 230 User logged in, proceed. =88t*dH(,"  
[右] SYST #sS9vv7i  
[右] 215 UNIX Type: L8 Ep<YCSQy$i  
[右] FEAT %TDXF_.[  
[右] 211-Extension supported 4'` C1