Connecting to 61.177.65.226, Port 4545 (#1)
Connected. Waiting for response.
220 Serv-U FTP Server v4.0 for WinSock ready...
USER biqing.net
331 User name okay, need password.
PASS xxxxxx
230 User logged in, proceed.
SYST
215 UNIX Type: L8
REST 100
350 Restarting at 100. Send STORE or RETRIEVE.
REST 0
350 Restarting at 0. Send STORE or RETRIEVE.
PWD
257 "/" is current directory.
TYPE A
200 Type set to A.
PORT 192,168,6,252,15,72
530 Only client IP address allowed for PORT command.
PASV
227 Entering Passive Mode (61,177,65,226,18,162)
LIST
150 Opening ASCII mode data connection for /bin/ls.
226 Transfer complete.
Transfer done: 2,022 bytes in 0.031 secs (65.23 k/sec)