[salaryman]

I've spent about 2 hours trying to figure this and I'm utterly baffled. I really hope someone can help.

I'm trying to connect to an FTP server (hosted with P4HOST.COM for what it's worth) using Cyberduck (although I have tried the Terminal and YummyFTP also). It connects fine and I get a listing no problem. However when I try and upload a file (any size but I've mainly been struggling with a 200K PDF) it just hangs ("stalled").

I have turned my firewall off yet it still does it. Annoyingly, it works perfectly from my PC laptop, using the exact same wireless connection - 900 kb/s upload!

Here the output from the ipfw command on my Mac Book Pro:

macbookpro:~ user$ sudo ipfw list
65535 allow ip from any to any

Is there anything else I can try to get this to work. It's SO annoying and I'm sure there's a simple explanation, not that I can find one anywhere.

Many thanks.

[besson3c]

Even with your firewall on, there is a rule to permit all outgoing connections, and the FTP server doesn't require any ports be open on your Mac.

Is there anything being printed to your logs (check within the Console app). Are you using Passive FTP?

Is there an option to use Secure FTP? If so, I would switch in a heartbeat. Don't FTP unless you absolutely have to.

[salaryman]

I don't think SFTP is an option.

Could you possibly let me know which log I should check? (I a bit of a noob)

[salaryman]

Argh! I'm just getting nowhere with this. If I turn on my firewall I get the following output from 'sudo ipfw list':

02000 allow ip from any to any via lo*
02010 deny ip from 127.0.0.0/8 to any in
02020 deny ip from any to 127.0.0.0/8 in
02030 deny ip from 224.0.0.0/3 to any in
02040 deny tcp from any to 224.0.0.0/3 in
02050 allow tcp from any to any out
02060 allow tcp from any to any established
02065 allow tcp from any to any frag
02070 allow tcp from any to any dst-port 3689 in
02080 allow tcp from any to any dst-port 5297 in
02090 allow tcp from any to any dst-port 5298 in
12190 deny tcp from any to any
65535 allow ip from any to any

This appears to make absolutely no difference to the FTP application -- the upload still fails irrespective of whether I have the firewall on or off.

Surely this shouldn't be so complicated. Why does the Mac make it so hard?

[salaryman]

I am seeing this problem on two different FTP servers. On one of them, entering:

EPSV

works. This turns off Extended Passive Mode. On the other server however, even when I turn this off I can't upload anything.

It sounds like a firewall issue (i.e. the remote server trying to send a command back to my Mac but it can't get through?) but I have turned the firewall off. Is there anything else I can do to open up all connections, from anywhere, on any port just to try and get this working?

Any help appreciated. Having to boot up my old Dell just to do FTP is driving me insane