How To Avoid Extra Data Connection for /bin/ls

Hi all,

Hope someone can help me. Can I avoid the extra data connection created for /bin/ls/ (bold red below)? For every download I have 3 TCP connections created, 2 data connections (on different client port) and 1 control connection. Apparently one of the data connection is used for this /bin/ls and I want to avoid this so I will have only 2 TCP connections per download. I don't know where I can set this option in Smartftp.

220 Microsoft FTP Service
[00:12:39] USER ****
[00:12:40] 331 Password required for ****.
[00:12:40] PASS (hidden)
[00:12:41] 230 User **** logged in.
[00:12:41] SYST
[00:12:41] 215 Windows_NT
[00:12:41] FEAT
[00:12:42] 500 'FEAT': command not understood
[00:12:42] TYPE I
[00:12:42] 200 Type set to I.
[00:12:42] REST 0
[00:12:43] 350 Restarting at 0.
[00:12:43] PWD
[00:12:44] 257 "/" is current directory.
[00:12:44] TYPE A
[00:12:44] 200 Type set to A.
[00:12:44] PORT **,***,**,***,**,***
[00:12:45] 200 PORT command successful.
[00:12:45] LIST
[00:12:46] 150 Opening ASCII mode data connection for /bin/ls.
[00:12:46] 226 Transfer complete.
[00:12:46] 49 bytes transferred. (2.99 KB/s) (16 ms)
[00:12:49] TYPE I
[00:12:50] 200 Type set to I.
[00:12:50] SIZE test.tar
[00:12:51] 213 604672
[00:12:52] PORT **,***,**,***,**,***
[00:12:53] 200 PORT command successful.
[00:12:53] RETR test.tar
[00:12:54] 150 Opening BINARY mode data connection for test.tar(604672 bytes).
[00:12:59] ABOR

Appreciate any help. Thanks.