From: Frederick Cheung <frederick.cheung@...>
Date: 2008-08-01T23:44:58+09:00
Subject: Re: My simple downloader doesn't work


On 1 Aug 2008, at 15:20, Mateusz Tybura wrote:

> Frederick Cheung wrote:
>> On 1 Aug 2008, at 14:46, Gregory Brown wrote:
>>
>>>> this file using Firefox3 and TotalCommander.
>>>> Code was tested on winXP and Kubuntu8.04.
>>>
>>> The code I showed worked on my machine.  Tested on OS X (10.4),
>>> without any firewall issues.
>>> Ruby version:
>>>
>> Beyond firewalls, active ftp won't work behind a NAT device.
>> Ftp servers sometimes say illegal port command if you tell them that
>> your address is a private ip address like 192.168.x (your address on
>> the network behind the nat device)
>>
>> Fred
>
> It can be it cause i'm connecting from small LAN. Got any idea how to
> make it works even that host is beheind nat device?

You need to be using passive ftp. According to the docs you just need  
to say ftp.passive = true (assuming ftp is an instance of Net::FTP)

Fred