linux ftp 登錄成功，卻無法取得文件列表，信息如下所示： 220 222.200.99.245 FTP server ready Name (ftp.gdut.edu.cn:guilong): ngpxbbs 331 Password required for ngpxbbs Password: 230 User ngpxbbs logged in Remote system type is UNIX. Using binary mode to transfer files. ftp> ls 227 Entering Passive Mode (222,200,99,245,79,43). ftp: connect: 連接超時 ftp> 大家快來幫幫忙阿(5ty(
