curl -o testfile --disable-eprt -P - --user usr:pw ftp://192.168.0.133/testfile

curl_ftp_3.log

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
FTP 0x7f8a110058f0 (line 3271) state change from STOP to WAIT220
FTP 0x7f8a110058f0 (line 848) state change from WAIT220 to USER
FTP 0x7f8a110058f0 (line 2646) state change from USER to PASS
FTP 0x7f8a110058f0 (line 860) state change from PASS to PWD
  0     0    0     0    0     0      0      0 --:--:--  0:00:01 --:--:--     0
Entry path is '/dd'
FTP 0x7f8a110058f0 (line 2963) state change from PWD to STOP
protocol connect phase DONE
  0     0    0     0    0     0      0      0 --:--:--  0:00:02 --:--:--     0
DO phase starts
DEBUG: In ftp_state_quote
FTP 0x7f8a110058f0 (line 1340) state change from STOP to PORT
Connect data stream actively
FTP 0x7f8a110058f0 (line 2131) state change from PORT to STOP
DEBUG: in ftp_dophase_done
DEBUG: in ftp_dophase_done
DO phase is complete2
DEBUG: in ftp_do_more: /*download*/ , calling ftp_range
DEBUG: in ftp_do_more: calling ftp_nb_type
FTP 0x7f8a110058f0 (line 3607) state change from STOP to RETR_TYPE
DEBUG: in ftp_do_more: calling ftp_multi_statemach
DEBUG: in ftp_do_more: return 0 after ftp->transfer if-else
DEBUG: in ftp_domore_getsock
DEBUG: in ftp_domore_getsock
DEBUG: In ftp_state_quote
DEBUG: In ftp_state_quote, instate: FTP_RETR_PREQUOTE, ftpc->known_filesize=-1
DEBUG: In ftp_state_quote, sending SIZE command
FTP 0x7f8a110058f0 (line 1795) state change from RETR_TYPE to RETR_SIZE
DEBUG: in ftp_do_more: error or no wait for data conn
  0     0    0     0    0     0      0      0 --:--:--  0:00:02 --:--:--     0
DEBUG: in ftp_domore_getsock
DEBUG: in ftp_domore_getsock
FTP 0x7f8a110058f0 (line 2348) state change from RETR_SIZE to RETR
DEBUG: in ftp_do_more: error or no wait for data conn
DEBUG: in ftp_domore_getsock
DEBUG: in ftp_domore_getsock
Maxdownload = -1
Getting file with size: 42000
Preparing for accepting server on data port
Checking for server connect
Data conn was not available immediately
FTP 0x7f8a110058f0 (line 2564) state change from RETR to STOP
DEBUG: in ftp_do_more: Need to wait for data conn
Checking for server connect
DEBUG: In ftp_do_more: ReceivedServerConnect not ok
DEBUG: in ftp_do_more: return 0 after ftp->transfer if-else
DEBUG: in ftp_domore_getsock
DEBUG: in ftp_domore_getsock
Checking for server connect
Ready to accept data connection from server
DEBUG: In ftp_do_more: ReceivedServerConnect ok
DEBUG: In AcceptServerConnect
Connection accepted from server
DEBUG: In ftp_do_more: Calling InitiateTransfer
DEBUG: In ftp_do_more: InitiateTransfer successful
DEBUG: in ftp_do_more: return 0 after ftp->transfer if-else
DEBUG: in ftp_domore_getsock
DEBUG: in ftp_domore_getsock
DEBUG: in ftp_do_more: /*download*/ , calling ftp_range
DEBUG: in ftp_do_more: calling ftp_nb_type
FTP 0x7f8a110058f0 (line 3602) state change from STOP to RETR_TYPE
DEBUG: In ftp_state_quote
DEBUG: In ftp_state_quote, instate: FTP_RETR_PREQUOTE, ftpc->known_filesize=-1
DEBUG: In ftp_state_quote, sending SIZE command
FTP 0x7f8a110058f0 (line 1795) state change from RETR_TYPE to RETR_SIZE
DEBUG: in ftp_do_more: calling ftp_multi_statemach
DEBUG: in ftp_do_more: return 0 after ftp->transfer if-else
  0 42000    0     0    0     0      0      0 --:--:--  0:00:04 --:--:--     0
DEBUG: in ftp_domore_getsock
DEBUG: in ftp_domore_getsock
FTP 0x7f8a110058f0 (line 2348) state change from RETR_SIZE to RETR
DEBUG: in ftp_do_more: error or no wait for data conn
  0     0    0     0    0     0      0      0 --:--:--  0:00:05 --:--:--     0
DEBUG: in ftp_domore_getsock
DEBUG: in ftp_domore_getsock
RETR response: 502
DEBUG: in ftp_do_more: error or no wait for data conn
DEBUG: in ftp_done
Remembering we are in dir ""
  0     0    0     0    0     0      0      0 --:--:--  0:00:05 --:--:--     0
curl: (19) FTP: couldn't retrieve (RETR failed) the specified file
Received only partial file: 0 bytes
FTP 0x7f8a110058f0 (line 4247) state change from RETR to QUIT
FTP 0x7f8a110058f0 (line 3138) state change from QUIT to STOP