I was trying to ftp some files to a server and I was using WS_FTP. I noticed that the connection was taking a long time to establish. I then got an error in WS_FTP:
The log from WS_FTP gives this:

WINSOCK.DLL: WinSock 2.0
WS_FTP LE 5.08 2000.01.13, Copyright © 1992-2000 Ipswitch, Inc. - -
connecting to xxx.xxx.xxx.xxx:21
Connected to xxx.xxx.xxx.xxx port 21
220 ProFTPD 1.2.2rc1 Server (ProFTPD) [xxx.xxx.xxx.xxx]
USER admin
331 Password required for admin.
PASS (hidden)
230 User admin logged in.
PWD
257 "/home/sites/home/users/admin" is current directory.
SYST
215 UNIX Type: L8
Host type (S): UNIX (standard)
PASV
227 Entering Passive Mode (63,145,181,aa,8,106).
connecting to xxx.xxx.xxx.xxx:2154
- -
connecting to xxx.xxx.xxx.xxx:2154
! Connection failed xxx.xxx.xxx.xxx - connection timed out
! connect: error 0
PORT 63,145,181,bb,5,63
200 PORT command successful.
LIST

! Retrieve of folder listing failed (0)



However, if I ftp from another server, I can connect to the server, but I get this error when I do an ls command:

331 Password required for admin.
Password:
230 User admin logged in.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
200 PORT command successful.
421 Service not available, remote server has closed connection
ftp>


What is up? I have stopped/started the FTP service through the control panel. What do I ned to check to get this working again?