I have tried all the version available from 4.2 until 7.2, it seems to me all the versions I've tried are invalid.
Looking at the errors logs and based on the Choosing TDS protocol, is SQL server 2014 supported?
Brief error:
Error 20017 (severity 9): Unexpected EOF from the server OS error 115, "Operation now in progress" Error 20002 (severity 9): Adaptive Server connection failed Looking at the log dumped by tsql:
log.c:196:Starting log file for FreeTDS 0.91 on 2016-04-05 15:35:48 with debug flags 0x4fff. util.c:331:tdserror(0x18ec140, 0x18ec290, 100, 0) util.c:361:tdserror: client library returned TDS_INT_CANCEL(2) util.c:384:tdserror: returning TDS_INT_CANCEL(2) iconv.c:330:tds_iconv_open(0x18ec290, UTF-8) iconv.c:187:local name for ISO-8859-1 is ISO-8859-1 iconv.c:187:local name for UTF-8 is UTF-8 iconv.c:187:local name for UCS-2LE is UCS-2LE iconv.c:187:local name for UCS-2BE is UCS-2BE iconv.c:349:setting up conversions for client charset "UTF-8" iconv.c:351:preparing iconv for "UTF-8" <-> "UCS-2LE" conversion iconv.c:391:preparing iconv for "ISO-8859-1" <-> "UCS-2LE" conversion iconv.c:394:tds_iconv_open: done net.c:205:Connecting to 192.168.1.221 port 4712 (TDS version 7.1) net.c:270:tds_open_socket: connect(2) returned "Operation now in progress" net.c:310:tds_open_socket() succeeded util.c:156:Changed query state from DEAD to IDLE net.c:741:Sending packet 0000 12 01 00 34 00 00 00 00-00 00 15 00 06 01 00 1b |...4.... ........| 0010 00 01 02 00 1c 00 0c 03-00 28 00 04 ff 08 00 01 |........ .(......| 0020 55 00 00 00 4d 53 53 51-4c 53 65 72 76 65 72 00 |U...MSSQ LServer.| 0030 d3 52 00 00 - |.R..| net.c:555:Received header 0000 48 54 54 50 2f 31 2e 31- |HTTP/1.1| util.c:331:tdserror(0x18ec140, 0x18ec290, 20017, 115) util.c:361:tdserror: client library returned TDS_INT_CANCEL(2) util.c:384:tdserror: returning TDS_INT_CANCEL(2) util.c:156:Changed query state from IDLE to DEAD login.c:466:login packet rejected util.c:331:tdserror(0x18ec140, 0x18ec290, 20002, 0) util.c:361:tdserror: client library returned TDS_INT_CANCEL(2) util.c:384:tdserror: returning TDS_INT_CANCEL(2) mem.c:615:tds_free_all_results()