I have attached a log of the login process. Can connect from a different computer on the same network and others from a different network can connect.
. 2010-02-22 13:13:59.851 --------------------------------------------------------------------------
. 2010-02-22 13:13:59.913 WinSCP Version 4.2.6 (Build 721) (OS 5.1.2600 Service Pack 2)
. 2010-02-22 13:13:59.913 Login time: Monday, February 22, 2010 1:13:59 PM
. 2010-02-22 13:13:59.913 --------------------------------------------------------------------------
. 2010-02-22 13:13:59.913 Session name: LDC
. 2010-02-22 13:13:59.913 Host name: ftp://ftpvermeer.learn.com (Port: 21)
. 2010-02-22 13:13:59.928 User name: vermeer (Password: Yes, Key file: No)
. 2010-02-22 13:13:59.928 Tunnel: No
. 2010-02-22 13:13:59.928 Transfer Protocol: FTP
. 2010-02-22 13:13:59.928 Ping type: C, Ping interval: 3600 sec; Timeout: 6000 sec
. 2010-02-22 13:13:59.928 Proxy: none
. 2010-02-22 13:13:59.928 FTP: FTPS: None; Passive: No [Force IP: No]
. 2010-02-22 13:13:59.928 Local directory: default, Remote directory: home, Update: No, Cache: Yes
. 2010-02-22 13:13:59.928 Cache directory changes: Yes, Permanent: Yes
. 2010-02-22 13:13:59.928 DST mode: 1
. 2010-02-22 13:13:59.928 --------------------------------------------------------------------------
. 2010-02-22 13:14:00.051 Connecting to ftp://ftpvermeer.learn.com ...
. 2010-02-22 13:14:00.051 Connected with ftp://ftpvermeer.learn.com. Waiting for welcome message...
. 2010-02-22 13:14:20.593 Disconnected from server
. 2010-02-22 13:14:20.593 Connection failed.
* 2010-02-22 13:14:20.608 (ESshFatal) Connection failed.
* 2010-02-22 13:14:20.608 Disconnected from server
* 2010-02-22 13:14:20.608 Connection failed.
. 2010-02-22 13:14:25.617 Connecting to ftp://ftpvermeer.learn.com ...
. 2010-02-22 13:14:25.617 Connected with ftp://ftpvermeer.learn.com. Waiting for welcome message...
. 2010-02-22 13:14:46.190 Disconnected from server
. 2010-02-22 13:14:46.190 Connection failed.
* 2010-02-22 13:14:46.205 (ESshFatal) Connection failed.
* 2010-02-22 13:14:46.205 Disconnected from server
* 2010-02-22 13:14:46.205 Connection failed.