FTP ongoing problem....disconnects on uploads/downloads

[Secret Agent]

I am having an ongoing problem with FTP disconnecting while uploading / downloading several files.

Tried:
FileZilla
CoreFTP

With:
PureFTP
ProFTP

On:
Static IP
Cable Connection (5500KBps average download speed)
cPanel 10.xC153 (or whatever latest CURRENT version is)

Keep Alive On in FTP client

Modifed /etc/pure-ftpd.conf to have max connection per IP at 60 and IDLE TIME at 60 as well. Restarted ftp server and same issue.

I have APF firewall installed with suggested allowed ports for cPanel shown below:

# Common ingress (inbound) TCP ports -3000_3500 = passive port range for Pure FTPD
IG_TCP_CPORTS="21,22,25,53,80,110,143,443,2082,2083, 2086,2087, 2095, 2096,3000_3500"
#
# Common ingress (inbound) UDP ports
IG_UDP_CPORTS="53"

# Common egress (outbound) TCP ports
EG_TCP_CPORTS="21,25,80,443,43,2089"
#
# Common egress (outbound) UDP ports
EG_UDP_CPORTS="20,21,53"

On my own computer I have:
Windows XP home
Norton AntiVirus
Firewall (Windows)
LinkSys Wireless Router

Host Server:
Dual Xeon HT
2GB Memory
CentOS 3.4

Any help would be appreciated

[kaon]

I've had FTP uploading problems with FileZilla and with Dreamweaver's internal FTP client.
Usually, uploads get stuck, and I have to abort / disconnect. (A zero-byte file is left on the server) I had to retry this many times before it goes thru. Failures roughly 7 out of 8 tries.
Sometimes (while using FileZilla) WinXP totally freezes up while trying to FTP up.

Then I tried another free client, SmartFTP, haven't seen those upload problems so far.

In all cases, I did not touch the FTP client settings... things like keepalive etc, just used the defaults.

[sneader]

Are you guys setting your FTP client up with "PASV" aka Passive file transfers?

That has fixed a lot of my customer FTP problems.

- Scott

[chirpy]

Why have you got a 500 port hole in your firewall? (3000_3500)

If you're suffering disconnections, then they're more likely to be timeouts because of a poor connection somewhere along the line between your PC and the server.

[Murtaza_t]

Disable the passive mode if it is enabled.... and try again.

If this dosent work then better switch to some other ftp client,,, may be Cute ftp or WS_FTP Pro.

And if you still have problems then what Chirpy says is correct.... and the only solution to this is change host....