HELP !

I am having trouble connecting to my web server (Optusnet). I have been using SmartFTP,I have also tried AceFTP with the same result, I can connect at work but not from my pc at home. I also manage a co-workers page (not with Optusnet, and can connect to his from both work and home.
This is what I get when I try to connect.

[18:31:14] SmartFTP v2.0.1002.0
[18:31:14] Resolving host name "members.optusnet.com.au"
[18:31:14] Connecting to ####### (i removed this) Port: 21
[18:31:14] Connected to members.optusnet.com.au.
[18:31:14] 220 ProFTPD 1.2.6 Server (ProFTPD Default Installation) [uweb02.syd.optusnet.com.au]
[18:31:14] USER #######
[18:31:14] 331 Password required for #######.
[18:31:14] PASS (hidden)
[18:31:14] 230 User #######@optusnet.com.au logged in.
[18:31:14] SYST
[18:31:14] 215 UNIX Type: L8
[18:31:14] Detected Server Type: UNIX
[18:31:14] FEAT
[18:31:14] 500 FEAT not understood.
[18:31:14] TYPE I
[18:31:14] 200 Type set to I.
[18:31:14] REST 0
[18:31:14] 350 Restarting at 0. Send STORE or RETRIEVE to initiate transfer.
[18:31:14] PWD
[18:31:14] 257 "/" is current directory.
[18:31:14] TYPE A
[18:31:14] 200 Type set to A.
[18:31:15] PASV
[18:31:17] An established connection was aborted by the software in your host machine.
[18:31:17] Server closed connection


Michael