Hello, i'm using FlashFXP (behind firewall) and got the problem to connect to my account through ftp. It seems that the passive connection can't be established, other ftp sites work with no problem.What could be the problem? thnx in advance
Here's the ftp log:

[R] Connecting to DriveHQ Account -> IP=66.220.9.50 PORT=21
[R] Connected to DriveHQ Account
[R] 220 Welcome! DriveHQ offers a complete FTP hosting solution for small businesses and advanced users. With our service, you save on FTP server hardware, software, hosting service and system administration cost. You can share files and folders with read/write permissions on DriveHQ.com platform. Please note Microsoft command line FTP client doesn't support Passive FTP and cannot be used with a firewall. For more info, please visit: http://www.drivehq.com/FTPService.aspx.
[R] USER (hidden)
[R] 331 User name ok, need password.
[R] PASS (hidden)
[R] 230 User successfully logged on.
[R] SYST
[R] 215 UNIX emulated by DriveHQ FTP Server.
[R] FEAT
[R] 211-Extensions supported:
[R]  SIZE
[R]  MDTM
[R]  UTF8
[R] 211 END
[R] PWD
[R] 257 "/" is current directory.
[R] TYPE A
[R] 200 Type set to A
[R] PASV
[R] 227 Entering Passive Mode (66,220,9,50,18,68).
[R] Opening data connection IP: 66.220.9.50 PORT: 4676
[R] Data Socket Error: Connection timed out
[R] List Error
[R] PASV
[R] 227 Entering Passive Mode (66,220,9,50,19,130).
[R] Opening data connection IP: 66.220.9.50 PORT: 4994
[R] Data Socket Error: Connection timed out
[R] List Error

Hi, could you please try a different FTP client, e.g. ws-FTP, CuteFTP, smartFTP or FileZilla? Let us know if it works for other FTP clients. If not, then it is your network problem. If yes, then we might have compatibility issue with FlashFXP. Thank you.

I apologise, it seems to be a problem of my network, i suppose ports around 4600 are closed. Other ftp sites i tried which are working use higher ports to connect. I solved the problem by connecting through a proxy server.