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Posted to ftpserver-users@mina.apache.org by Martin Wunderlich <ma...@censhare.de> on 2015/06/09 13:41:37 UTC
"Connection refused" error when internal IP address is set on listener
Hi all,
We observed some strange behavior that I can’t quite explain: Our FTP server is running in passive mode and offering a listener for FTP over TLS. When the internal IP address is set in the configuration, I am not able to connect with the FTP client (tested with both Filezilla and Cyberbuck). The error „Connection refused“ is raised when trying to connect. However, when the internal IP address is set to „0.0.0.0“, the connection is fine. I have stepped through the code and the listener seems to be instantiated alright.
So, what could be the problem?
Cheers,
Martin
censhare featured as Cool Vendor for Content Management by Gartner
Re: "Connection refused" error when internal IP address is set on listener
Posted by David Latorre <dv...@gmail.com>.
Oh I thought your problem was with the data connection.
If the only difference is the internal IP, it might be the that internal
ip you set is incorrect( or, at least, it is not the ip to which you are
trying to connect with Filezilla).
Besides enabling logging in the server side you can use standard OS
commands to check if your server is listening (netstat -an, telnet from
local host etc.)
El 09/06/2015 16:03, "Martin Wunderlich" <ma...@censhare.de> escribió:
> This is the log output I get when I set the log level to Debug:
> (the contents are identical in the console and the log file)
>
> 16:01:50 Status: Disconnected from server
> 16:01:50 Trace: CControlSocket::DoClose(64)
> 16:01:50 Trace: CControlSocket::DoClose(64)
> 16:01:50 Trace: CControlSocket::DoClose(64)
> 16:01:50 Trace: CFileZillaEnginePrivate::ResetOperation(0)
> 16:01:50 Status: Resolving address of example.com
> 16:01:50 Status: Connecting to 123.123.123.123:4243...
> 16:01:50 Status: Connection attempt failed with "ECONNREFUSED -
> Connection refused by server".
> 16:01:50 Trace: CRealControlSocket::OnClose(61)
> 16:01:50 Trace: CControlSocket::DoClose(64)
> 16:01:50 Trace: CFtpControlSocket::ResetOperation(66)
> 16:01:50 Trace: CControlSocket::ResetOperation(66)
> 16:01:50 Error: Could not connect to server
> 16:01:50 Trace: CFileZillaEnginePrivate::ResetOperation(66)
>
> Cheers,
>
> Martin
>
>
> > Am 09.06.2015 um 15:47 schrieb David Latorre <dv...@gmail.com>:
> >
> > Probably the full Filezilla log file will be enough
> > El 09/06/2015 15:46, "Martin Wunderlich" <ma...@censhare.de> escribió:
> >
> >> Hi David,
> >>
> >> There isn’t much in the log files, I am afraid. This is what I get with
> >> Filezilla on the client side:
> >>
> >> 15:44:30 Status: Resolving address of exmample.com
> >> 15:44:30 Status: Connecting to 123.123.123.123:4243...
> >> 15:44:30 Status: Connection attempt failed with "ECONNREFUSED -
> >> Connection refused by server".
> >> 15:44:30 Error: Could not connect to server
> >>
> >> There is nothing logged on the server side. Sorry, not much help, I
> know.
> >>
> >> Cheers,
> >>
> >> Martin
> >>
> >>
> >>
> >>
> >>> Am 09.06.2015 um 15:36 schrieb David Latorre <dv...@gmail.com>:
> >>>
> >>> Martin,
> >>>
> >>> Can you include the log file (with the messages which have been
> received
> >>> and sent) of the Ftp server? Also, the log file of the ftp client
> >> would
> >>> be helpful
> >>> El 09/06/2015 15:25, "Martin Wunderlich" <ma...@censhare.de> escribió:
> >>>
> >>>> No, in the client I set the external IP address, because the server is
> >>>> accessed from outside the firewall. This external IP address is also
> >>>> configured on the server-side, of course.
> >>>>
> >>>> Cheers,
> >>>>
> >>>> Martin
> >>>>
> >>>>
> >>>>> Am 09.06.2015 um 15:18 schrieb Alessio Santacroce <
> >>>> alessio.santacroce@gmail.com>:
> >>>>>
> >>>>> Stupid question...
> >>>>> when you set the ip to the ftp server, do you use the same ip on the
> >> ftp
> >>>>> client as well?
> >>>>>
> >>>>> On Tuesday, June 9, 2015, Martin Wunderlich <ma...@censhare.de>
> wrote:
> >>>>>
> >>>>>> Hi all,
> >>>>>>
> >>>>>> We observed some strange behavior that I can’t quite explain: Our
> FTP
> >>>>>> server is running in passive mode and offering a listener for FTP
> over
> >>>> TLS.
> >>>>>> When the internal IP address is set in the configuration, I am not
> >> able
> >>>> to
> >>>>>> connect with the FTP client (tested with both Filezilla and
> >> Cyberbuck).
> >>>> The
> >>>>>> error „Connection refused“ is raised when trying to connect.
> However,
> >>>> when
> >>>>>> the internal IP address is set to „0.0.0.0“, the connection is
> fine. I
> >>>> have
> >>>>>> stepped through the code and the listener seems to be instantiated
> >>>> alright.
> >>>>>> So, what could be the problem?
> >>>>>>
> >>>>>> Cheers,
> >>>>>>
> >>>>>> Martin
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> censhare featured as Cool Vendor for Content Management by Gartner
> >>>>>>
> >>>>
> >>>>
> >>>>
> >>>> censhare featured as Cool Vendor for Content Management by Gartner
> >>>>
> >>
> >>
> >>
> >> censhare featured as Cool Vendor for Content Management by Gartner
> >>
>
>
>
> censhare featured as Cool Vendor for Content Management by Gartner
>
Re: "Connection refused" error when internal IP address is set on listener
Posted by Martin Wunderlich <ma...@censhare.de>.
This is the log output I get when I set the log level to Debug:
(the contents are identical in the console and the log file)
16:01:50 Status: Disconnected from server
16:01:50 Trace: CControlSocket::DoClose(64)
16:01:50 Trace: CControlSocket::DoClose(64)
16:01:50 Trace: CControlSocket::DoClose(64)
16:01:50 Trace: CFileZillaEnginePrivate::ResetOperation(0)
16:01:50 Status: Resolving address of example.com
16:01:50 Status: Connecting to 123.123.123.123:4243...
16:01:50 Status: Connection attempt failed with "ECONNREFUSED - Connection refused by server".
16:01:50 Trace: CRealControlSocket::OnClose(61)
16:01:50 Trace: CControlSocket::DoClose(64)
16:01:50 Trace: CFtpControlSocket::ResetOperation(66)
16:01:50 Trace: CControlSocket::ResetOperation(66)
16:01:50 Error: Could not connect to server
16:01:50 Trace: CFileZillaEnginePrivate::ResetOperation(66)
Cheers,
Martin
> Am 09.06.2015 um 15:47 schrieb David Latorre <dv...@gmail.com>:
>
> Probably the full Filezilla log file will be enough
> El 09/06/2015 15:46, "Martin Wunderlich" <ma...@censhare.de> escribió:
>
>> Hi David,
>>
>> There isn’t much in the log files, I am afraid. This is what I get with
>> Filezilla on the client side:
>>
>> 15:44:30 Status: Resolving address of exmample.com
>> 15:44:30 Status: Connecting to 123.123.123.123:4243...
>> 15:44:30 Status: Connection attempt failed with "ECONNREFUSED -
>> Connection refused by server".
>> 15:44:30 Error: Could not connect to server
>>
>> There is nothing logged on the server side. Sorry, not much help, I know.
>>
>> Cheers,
>>
>> Martin
>>
>>
>>
>>
>>> Am 09.06.2015 um 15:36 schrieb David Latorre <dv...@gmail.com>:
>>>
>>> Martin,
>>>
>>> Can you include the log file (with the messages which have been received
>>> and sent) of the Ftp server? Also, the log file of the ftp client
>> would
>>> be helpful
>>> El 09/06/2015 15:25, "Martin Wunderlich" <ma...@censhare.de> escribió:
>>>
>>>> No, in the client I set the external IP address, because the server is
>>>> accessed from outside the firewall. This external IP address is also
>>>> configured on the server-side, of course.
>>>>
>>>> Cheers,
>>>>
>>>> Martin
>>>>
>>>>
>>>>> Am 09.06.2015 um 15:18 schrieb Alessio Santacroce <
>>>> alessio.santacroce@gmail.com>:
>>>>>
>>>>> Stupid question...
>>>>> when you set the ip to the ftp server, do you use the same ip on the
>> ftp
>>>>> client as well?
>>>>>
>>>>> On Tuesday, June 9, 2015, Martin Wunderlich <ma...@censhare.de> wrote:
>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> We observed some strange behavior that I can’t quite explain: Our FTP
>>>>>> server is running in passive mode and offering a listener for FTP over
>>>> TLS.
>>>>>> When the internal IP address is set in the configuration, I am not
>> able
>>>> to
>>>>>> connect with the FTP client (tested with both Filezilla and
>> Cyberbuck).
>>>> The
>>>>>> error „Connection refused“ is raised when trying to connect. However,
>>>> when
>>>>>> the internal IP address is set to „0.0.0.0“, the connection is fine. I
>>>> have
>>>>>> stepped through the code and the listener seems to be instantiated
>>>> alright.
>>>>>> So, what could be the problem?
>>>>>>
>>>>>> Cheers,
>>>>>>
>>>>>> Martin
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> censhare featured as Cool Vendor for Content Management by Gartner
>>>>>>
>>>>
>>>>
>>>>
>>>> censhare featured as Cool Vendor for Content Management by Gartner
>>>>
>>
>>
>>
>> censhare featured as Cool Vendor for Content Management by Gartner
>>
censhare featured as Cool Vendor for Content Management by Gartner
Re: "Connection refused" error when internal IP address is set on listener
Posted by David Latorre <dv...@gmail.com>.
Probably the full Filezilla log file will be enough
El 09/06/2015 15:46, "Martin Wunderlich" <ma...@censhare.de> escribió:
> Hi David,
>
> There isn’t much in the log files, I am afraid. This is what I get with
> Filezilla on the client side:
>
> 15:44:30 Status: Resolving address of exmample.com
> 15:44:30 Status: Connecting to 123.123.123.123:4243...
> 15:44:30 Status: Connection attempt failed with "ECONNREFUSED -
> Connection refused by server".
> 15:44:30 Error: Could not connect to server
>
> There is nothing logged on the server side. Sorry, not much help, I know.
>
> Cheers,
>
> Martin
>
>
>
>
> > Am 09.06.2015 um 15:36 schrieb David Latorre <dv...@gmail.com>:
> >
> > Martin,
> >
> > Can you include the log file (with the messages which have been received
> > and sent) of the Ftp server? Also, the log file of the ftp client
> would
> > be helpful
> > El 09/06/2015 15:25, "Martin Wunderlich" <ma...@censhare.de> escribió:
> >
> >> No, in the client I set the external IP address, because the server is
> >> accessed from outside the firewall. This external IP address is also
> >> configured on the server-side, of course.
> >>
> >> Cheers,
> >>
> >> Martin
> >>
> >>
> >>> Am 09.06.2015 um 15:18 schrieb Alessio Santacroce <
> >> alessio.santacroce@gmail.com>:
> >>>
> >>> Stupid question...
> >>> when you set the ip to the ftp server, do you use the same ip on the
> ftp
> >>> client as well?
> >>>
> >>> On Tuesday, June 9, 2015, Martin Wunderlich <ma...@censhare.de> wrote:
> >>>
> >>>> Hi all,
> >>>>
> >>>> We observed some strange behavior that I can’t quite explain: Our FTP
> >>>> server is running in passive mode and offering a listener for FTP over
> >> TLS.
> >>>> When the internal IP address is set in the configuration, I am not
> able
> >> to
> >>>> connect with the FTP client (tested with both Filezilla and
> Cyberbuck).
> >> The
> >>>> error „Connection refused“ is raised when trying to connect. However,
> >> when
> >>>> the internal IP address is set to „0.0.0.0“, the connection is fine. I
> >> have
> >>>> stepped through the code and the listener seems to be instantiated
> >> alright.
> >>>> So, what could be the problem?
> >>>>
> >>>> Cheers,
> >>>>
> >>>> Martin
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> censhare featured as Cool Vendor for Content Management by Gartner
> >>>>
> >>
> >>
> >>
> >> censhare featured as Cool Vendor for Content Management by Gartner
> >>
>
>
>
> censhare featured as Cool Vendor for Content Management by Gartner
>
Re: "Connection refused" error when internal IP address is set on listener
Posted by Martin Wunderlich <ma...@censhare.de>.
Hi David,
There isn’t much in the log files, I am afraid. This is what I get with Filezilla on the client side:
15:44:30 Status: Resolving address of exmample.com
15:44:30 Status: Connecting to 123.123.123.123:4243...
15:44:30 Status: Connection attempt failed with "ECONNREFUSED - Connection refused by server".
15:44:30 Error: Could not connect to server
There is nothing logged on the server side. Sorry, not much help, I know.
Cheers,
Martin
> Am 09.06.2015 um 15:36 schrieb David Latorre <dv...@gmail.com>:
>
> Martin,
>
> Can you include the log file (with the messages which have been received
> and sent) of the Ftp server? Also, the log file of the ftp client would
> be helpful
> El 09/06/2015 15:25, "Martin Wunderlich" <ma...@censhare.de> escribió:
>
>> No, in the client I set the external IP address, because the server is
>> accessed from outside the firewall. This external IP address is also
>> configured on the server-side, of course.
>>
>> Cheers,
>>
>> Martin
>>
>>
>>> Am 09.06.2015 um 15:18 schrieb Alessio Santacroce <
>> alessio.santacroce@gmail.com>:
>>>
>>> Stupid question...
>>> when you set the ip to the ftp server, do you use the same ip on the ftp
>>> client as well?
>>>
>>> On Tuesday, June 9, 2015, Martin Wunderlich <ma...@censhare.de> wrote:
>>>
>>>> Hi all,
>>>>
>>>> We observed some strange behavior that I can’t quite explain: Our FTP
>>>> server is running in passive mode and offering a listener for FTP over
>> TLS.
>>>> When the internal IP address is set in the configuration, I am not able
>> to
>>>> connect with the FTP client (tested with both Filezilla and Cyberbuck).
>> The
>>>> error „Connection refused“ is raised when trying to connect. However,
>> when
>>>> the internal IP address is set to „0.0.0.0“, the connection is fine. I
>> have
>>>> stepped through the code and the listener seems to be instantiated
>> alright.
>>>> So, what could be the problem?
>>>>
>>>> Cheers,
>>>>
>>>> Martin
>>>>
>>>>
>>>>
>>>>
>>>> censhare featured as Cool Vendor for Content Management by Gartner
>>>>
>>
>>
>>
>> censhare featured as Cool Vendor for Content Management by Gartner
>>
censhare featured as Cool Vendor for Content Management by Gartner
Re: "Connection refused" error when internal IP address is set on listener
Posted by David Latorre <dv...@gmail.com>.
Martin,
Can you include the log file (with the messages which have been received
and sent) of the Ftp server? Also, the log file of the ftp client would
be helpful
El 09/06/2015 15:25, "Martin Wunderlich" <ma...@censhare.de> escribió:
> No, in the client I set the external IP address, because the server is
> accessed from outside the firewall. This external IP address is also
> configured on the server-side, of course.
>
> Cheers,
>
> Martin
>
>
> > Am 09.06.2015 um 15:18 schrieb Alessio Santacroce <
> alessio.santacroce@gmail.com>:
> >
> > Stupid question...
> > when you set the ip to the ftp server, do you use the same ip on the ftp
> > client as well?
> >
> > On Tuesday, June 9, 2015, Martin Wunderlich <ma...@censhare.de> wrote:
> >
> >> Hi all,
> >>
> >> We observed some strange behavior that I can’t quite explain: Our FTP
> >> server is running in passive mode and offering a listener for FTP over
> TLS.
> >> When the internal IP address is set in the configuration, I am not able
> to
> >> connect with the FTP client (tested with both Filezilla and Cyberbuck).
> The
> >> error „Connection refused“ is raised when trying to connect. However,
> when
> >> the internal IP address is set to „0.0.0.0“, the connection is fine. I
> have
> >> stepped through the code and the listener seems to be instantiated
> alright.
> >> So, what could be the problem?
> >>
> >> Cheers,
> >>
> >> Martin
> >>
> >>
> >>
> >>
> >> censhare featured as Cool Vendor for Content Management by Gartner
> >>
>
>
>
> censhare featured as Cool Vendor for Content Management by Gartner
>
Re: "Connection refused" error when internal IP address is set on listener
Posted by Martin Wunderlich <ma...@censhare.de>.
No, in the client I set the external IP address, because the server is accessed from outside the firewall. This external IP address is also configured on the server-side, of course.
Cheers,
Martin
> Am 09.06.2015 um 15:18 schrieb Alessio Santacroce <al...@gmail.com>:
>
> Stupid question...
> when you set the ip to the ftp server, do you use the same ip on the ftp
> client as well?
>
> On Tuesday, June 9, 2015, Martin Wunderlich <ma...@censhare.de> wrote:
>
>> Hi all,
>>
>> We observed some strange behavior that I can’t quite explain: Our FTP
>> server is running in passive mode and offering a listener for FTP over TLS.
>> When the internal IP address is set in the configuration, I am not able to
>> connect with the FTP client (tested with both Filezilla and Cyberbuck). The
>> error „Connection refused“ is raised when trying to connect. However, when
>> the internal IP address is set to „0.0.0.0“, the connection is fine. I have
>> stepped through the code and the listener seems to be instantiated alright.
>> So, what could be the problem?
>>
>> Cheers,
>>
>> Martin
>>
>>
>>
>>
>> censhare featured as Cool Vendor for Content Management by Gartner
>>
censhare featured as Cool Vendor for Content Management by Gartner
Re: "Connection refused" error when internal IP address is set on listener
Posted by Alessio Santacroce <al...@gmail.com>.
Stupid question...
when you set the ip to the ftp server, do you use the same ip on the ftp
client as well?
On Tuesday, June 9, 2015, Martin Wunderlich <ma...@censhare.de> wrote:
> Hi all,
>
> We observed some strange behavior that I can’t quite explain: Our FTP
> server is running in passive mode and offering a listener for FTP over TLS.
> When the internal IP address is set in the configuration, I am not able to
> connect with the FTP client (tested with both Filezilla and Cyberbuck). The
> error „Connection refused“ is raised when trying to connect. However, when
> the internal IP address is set to „0.0.0.0“, the connection is fine. I have
> stepped through the code and the listener seems to be instantiated alright.
> So, what could be the problem?
>
> Cheers,
>
> Martin
>
>
>
>
> censhare featured as Cool Vendor for Content Management by Gartner
>