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Hi,
my PC runs well on the network (internet, messenging,..) but I cannot
startt any ftp session on any server (the ftp connects but no command
issues: time out). I see also that my PC does not accept any ping. the
firewall is stopped and the ipsec service is stopped.
any idea ?
On 2 Sep, 14:32, Jean-Didier Pons <Jean-Didier.sP...@wanadoo.fr>
wrote:[color=blue]
> Hi,
> my PC runs well on the network (internet, messenging,..) but I cannot
> startt any ftp session on any server (the ftp connects but no command
> issues: time out). I see also that my PC does not accept any ping. the
> firewall is stopped and the ipsec service is stopped.
> any idea ?[/color]
In order for FTP to connect it usually needs to issue few commands and
log you in - does it do that? Do you get the ftp prompt?
You PC "does not accept any ping"? Where from? You can not "ping
localhost"? Nobody can ping your PC from the internet?
Thank you for your answer:
ftp: I get the ftp prompt, O can log on the ftp server, but all commands
(ls, get, ..) fail (the ftp server tries to get in my PC without result
ping: no PC can get any answer when pinging my PC on the LAN (either at
home or at work ==> different LAN's
JD
GArlington wrote:
[color=blue]
>On 2 Sep, 14:32, Jean-Didier Pons <Jean-Didier.sP...@wanadoo.fr>
>wrote:
>
>[color=green]
>>Hi,
>>my PC runs well on the network (internet, messenging,..) but I cannot
>>startt any ftp session on any server (the ftp connects but no command
>>issues: time out). I see also that my PC does not accept any ping. the
>>firewall is stopped and the ipsec service is stopped.
>>any idea ?
>>
>>[/color]
>
>In order for FTP to connect it usually needs to issue few commands and
>log you in - does it do that? Do you get the ftp prompt?
>You PC "does not accept any ping"? Where from? You can not "ping
>localhost"? Nobody can ping your PC from the internet?
>
>
>[/color]
[ Please, please, please don't toppost! And please, please, please don't
sent any html. ]
On Thu, 06 Sep 2007 19:34:23 +0200, Jean-Didier Pons wrote:
[color=blue]
> GArlington wrote:
>[color=green]
>>On 2 Sep, 14:32, Jean-Didier Pons <Jean-Didier.sP...@wanadoo.fr> wrote:
>>
>>[color=darkred]
>>>Hi,
>>>my PC runs well on the network (internet, messenging,..) but I cannot
>>>startt any ftp session on any server (the ftp connects but no command
>>>issues: time out). I see also that my PC does not accept any ping. the
>>>firewall is stopped and the ipsec service is stopped. any idea ?
>>>
>>>
>>>[/color]
>>In order for FTP to connect it usually needs to issue few commands and
>>log you in - does it do that? Do you get the ftp prompt? You PC "does
>>not accept any ping"? Where from? You can not "ping localhost"? Nobody
>>can ping your PC from the internet?
>>[/color]
> Thank you for your answer:
> ftp: I get the ftp prompt, O can log on the ftp server, but all commands
> (ls, get, ..) fail (the ftp server tries to get in my PC without result
> ping: no PC can get any answer when pinging my PC on the LAN (either at
> home or at work ==> different LAN's[/color]
Typical firewall or NAT issue. FTP uses data connections to get transfers
done. This is not only for get and put, but also for ls. So either there
is a firewall that does not understand ftp data channels, a natting
router that does not understand ftp data channels, or, most likely, a
natting firewall that does not understand ftp data channels.
A quick solution would be to change to passive ftp. That usually solves
these kinds of problems.
HTH,
M4
In article <46E03A1F.2020706@wanadoo.fr>,
Jean-Didier Pons <Jean-Didier.sPons@wanadoo.fr> wrote:
[color=blue]
> Thank you for your answer:
> ftp: I get the ftp prompt, O can log on the ftp server, but all commands
> (ls, get, ..) fail (the ftp server tries to get in my PC without result
> ping: no PC can get any answer when pinging my PC on the LAN (either at
> home or at work ==> different LAN's[/color]
This suggests that there's a problem establishing the data connection.
Does your FTP client let you switch between active and passive mode?
Try toggling this.
[color=blue]
> JD
>
> GArlington wrote:
>[color=green]
> >On 2 Sep, 14:32, Jean-Didier Pons <Jean-Didier.sP...@wanadoo.fr>
> >wrote:
> >
> >[color=darkred]
> >>Hi,
> >>my PC runs well on the network (internet, messenging,..) but I cannot
> >>startt any ftp session on any server (the ftp connects but no command
> >>issues: time out). I see also that my PC does not accept any ping. the
> >>firewall is stopped and the ipsec service is stopped.
> >>any idea ?
> >>
> >>[/color]
> >
> >In order for FTP to connect it usually needs to issue few commands and
> >log you in - does it do that? Do you get the ftp prompt?
> >You PC "does not accept any ping"? Where from? You can not "ping
> >localhost"? Nobody can ping your PC from the internet?
> >
> >
> >[/color][/color]
--
Barry Margolin, [email]barmar@alum.mit.edu[/email]
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
*** PLEASE don't copy me on replies, I'll read them in the group ***
In article <pan.2007.09.06.19.44.24@rtij.nl.invlalid>, Martijn Lievaart <m@rtij.nl.invlalid> writes:[color=blue]
> [ Please, please, please don't toppost! And please, please, please don't
> sent any html. ]
>
> On Thu, 06 Sep 2007 19:34:23 +0200, Jean-Didier Pons wrote:
>[color=green]
>> GArlington wrote:
>>[color=darkred]
>>>On 2 Sep, 14:32, Jean-Didier Pons <Jean-Didier.sP...@wanadoo.fr> wrote:
>>>
>>>
>>>>Hi,
>>>>my PC runs well on the network (internet, messenging,..) but I cannot
>>>>startt any ftp session on any server (the ftp connects but no command
>>>>issues: time out). I see also that my PC does not accept any ping. the
>>>>firewall is stopped and the ipsec service is stopped. any idea ?
>>>>
>>>>
>>>>
>>>In order for FTP to connect it usually needs to issue few commands and
>>>log you in - does it do that? Do you get the ftp prompt? You PC "does
>>>not accept any ping"? Where from? You can not "ping localhost"? Nobody
>>>can ping your PC from the internet?
>>>[/color]
>> Thank you for your answer:
>> ftp: I get the ftp prompt, O can log on the ftp server, but all commands
>> (ls, get, ..) fail (the ftp server tries to get in my PC without result
>> ping: no PC can get any answer when pinging my PC on the LAN (either at
>> home or at work ==> different LAN's[/color]
>
> Typical firewall or NAT issue. FTP uses data connections to get transfers
> done. This is not only for get and put, but also for ls. So either there
> is a firewall that does not understand ftp data channels, a natting
> router that does not understand ftp data channels, or, most likely, a
> natting firewall that does not understand ftp data channels.[/color]
Although those problems may exist, there's a smoking gun much
closer to home.
Nobody on the local LAN can ping him. It's almost certain that he's
still got some sort of firewall functionality running on the local PC
despite his attempts to turn it off.
He needs to get PING working before he starts looking for issues on
routers or natting firewalls.
[color=blue]
> A quick solution would be to change to passive ftp. That usually solves
> these kinds of problems.[/color]
Yes.
In FTP active mode, the data connections are initiated by the FTP server
and come inbound to the client workstation. Client firewalls tend to
object to inbound connections. In FTP passive mode, the data connections
are initiated by the FTP client and are outbound from the client
workstation. Client firewalls tend to be much less picky about outbound
connections.
The Microsoft command line FTP client only does active mode. You
cannot command it into passive mode.
The FTP functionality built into most web browsers uses passive mode
by default.
(Quick test: browse to [url]FTP://username@ftpserver/directoryname[/url])
The FTP functionality provided by downloadable FTP clients usually does
passive mode by default and almost universally allows the mode
to be overridden by the user.
[email]briggs@encompasserve.org[/email] wrote:
[color=blue][color=green]
>>....
>>done. This is not only for get and put, but also for ls. So either there
>>is a firewall that does not understand ftp data channels, a natting
>>router that does not understand ftp data channels, or, most likely, a
>>natting firewall that does not understand ftp data channels.
>>
>>[/color]
>
>Although those problems may exist, there's a smoking gun much
>closer to home.
>
>Nobody on the local LAN can ping him. It's almost certain that he's
>still got some sort of firewall functionality running on the local PC
>despite his attempts to turn it off.
>
>He needs to get PING working before he starts looking for issues on
>routers or natting firewalls.
>
>
>[/color]
Yes I totally agree. It seems that a ,firewall prevents from getting
into my PC altough no firewall is active
thanks for all comments
[color=blue][color=green]
>>A quick solution would be to change to passive ftp. That usually solves
>>these kinds of problems.
>>
>>[/color]
>
>Yes.
>
>In FTP active mode, the data connections are initiated by the FTP server
>and come inbound to the client workstation. Client firewalls tend to
>object to inbound connections. In FTP passive mode, the data connections
>are initiated by the FTP client and are outbound from the client
>workstation. Client firewalls tend to be much less picky about outbound
>connections.
>
>The Microsoft command line FTP client only does active mode. You
>cannot command it into passive mode.
>
>The FTP functionality built into most web browsers uses passive mode
>by default.
>
>(Quick test: browse to [url]FTP://username@ftpserver/directoryname[/url])
>
>The FTP functionality provided by downloadable FTP clients usually does
>passive mode by default and almost universally allows the mode
>to be overridden by the user.
>
>[/color]
On Fri, 07 Sep 2007 18:35:56 +0200, Jean-Didier Pons wrote:
[color=blue][color=green]
>>He needs to get PING working before he starts looking for issues on
>>routers or natting firewalls.
>>[/color]
>
> Yes I totally agree. It seems that a ,firewall prevents from getting
> into my PC altough no firewall is active[/color]
If you cannot ping your PC on the local LAN, but can set up an (only
partial functioning) ftp session, there must be a firewall on that PC.
However, it does not hurt to try passive FTP to see if that works.
Filezilla is my favorite.
M4
Jean-Didier Pons wrote:[color=blue]
>
> Yes I totally agree. It seems that a ,firewall prevents from getting
> into my PC altough no firewall is active
>
> thanks for all comments
>[/color]
Let's keep this thread going, please.....I have the exact same problem
with my laptop and my desktop PCs, both running WinXP.
>>> On 9/2/2007 at 7:32 AM, in message
<46dabb79$0$25932$ba4acef3@news.orange.fr>, Jean-Didier
Pons<Jean-Didier.sPons@wanadoo.fr> wrote:[color=blue]
> Hi,
> my PC runs well on the network (internet, messenging,..) but I cannot
> startt any ftp session on any server (the ftp connects but no command
> issues: time out). I see also that my PC does not accept any ping. the
> firewall is stopped and the ipsec service is stopped.
> any idea ?[/color]
Probably not the issue, but my new DSL modem had the FTP protocol blocked by
default. Once I finally realized that it was only FTP that was being
blocked I was able to remove the block.
Frank