Please help me solve an ftp client error

[bill at horne.net (Bill Horne)]

Steve Conley wrote:
> Bill Horne wrote:
>   
>> Steve Conley wrote:
>>
>>     
>>> Bill Horne wrote:
>>>  
>>>
>>>       
>>>> Steve Conley wrote:
>>>>
>>>>   
>>>>         
>>>>> Bill Horne wrote:
>>>>>
>>>>>
>>>>>     
>>>>>           
>>>>>> Thanks for reading this.
>>>>>>
>>>>>> I've just installed a new Debian Sarge machine, and am puzzled by
>>>>>> errors
>>>>>> I'm getting when I use the ftp client.
>>>>>>
>>>>>> I ran ftp -p -d -v myhost.org, and the client started with an error of
>>>>>> "setsockopt: Bad file descriptor". I was able to log into the host,
>>>>>> but
>>>>>> when I entered an "ls" command, the client responded with "setsockopt
>>>>>> (ignored): Permission denied". It then prints "227 Entering Passive
>>>>>> Mode", and stalls, with no further output until timeout some minutes
>>>>>> later.
>>>>>>
>>>>>> I'm able to transfer files to and from myhost.org using a Windows
>>>>>> client
>>>>>> and the MS Ftp program, so I think the problem lies in the ftp client
>>>>>> that Sarge has installed.
>>>>>>
>>>>>> All suggestions welcome.
>>>>>>
>>>>>> Bill
>>>>>>
>>>>>>  
>>>>>>       
>>>>>>             
>>>>> Try loading the ipt_nat_ftp and ipt_conntrack_ftp modules.
>>>>>
>>>>>
>>>>>
>>>>>     
>>>>>           
>>>> I'm unable to insmod them and modprobe can't find them either. I've
>>>> already got the iptables package loaded: where may I download them?
>>>>
>>>> TIA.
>>>>
>>>> Bill
>>>>
>>>>   
>>>>         
>>> Actually, I think they're called ip_nat_ftp and ip_conntrack_ftp, not
>>> "ipt". Modprobe should find them, if not, try this:
>>> http://superb-east.dl.sourceforge.net/sourceforge/leaf/Bering_1.2_modules_2.4.20.tar.gz
>>>
>>>  
>>>
>>>       
>> I ran modprobe -d and it lists ip_conntrack (but not ip_conntrack_ftp)
>> and ip_nat_ftp. It shows mode: NORMAL for both of these.
>>
>> The listing also show modules "ip_tables" and "iptable_nat".
>>
>> I don't know if it matters, but modprobe also reports that
>>
>>    "/etc/modules.conf is more recent than
>> /lib/modules/2.4.27-2-686/modules.dep"
>>
>> HTH.
>>
>> Bill
>>
>>     
> I think that package will install them (if you've already installed it,
> and the modules aren't there, I don't know what the problem is).
>
> http://superb-east.dl.sourceforge.net/sourceforge/leaf/Bering_1.2_modules_2.4.20.tar.gz

Steve,

Thanks for your help on this, and although this specific problem is 
still to be solved, I've learned a lot and have been introduced to LEAF. 
I appreciate your time.

I ran depmod, and then modprobe for both the ip_nat_ftp and 
ip_conntrack_ftp modules. Both are already installed.

When I start the ftp client, I still get the error "ftp: setsockopt: Bad 
file descriptor", but I no longer get the error "setsockopt(ignored): 
Permission denied", so we're making progress.

If I attempt an "ls" in passive mode, the process stalls after the 
"entering passive mode" message, as it did before. However, after I 
mapped port 20 at the firewall, I *was* able to ftp files in active 
mode. Ergo, it's an issue with passive mode.

I'd appreciate all suggestions on ways to isolate and cure the issue 
with _passive_ mode transfers.

Bill