u_d
Hi,
It seems there’s been a problem with port forwarding to your forum server over the last few days. In any case, I usually get a message saying the server can’t be found. After trying a few times, it sometimes works, but not always.
Best regards,
Ulrich
MirkoBoeddecker
...does anyone else have this problem?
Nothing has actually been changed.
Best regards,
Mirko
HenningH
Hello,
I experience this issue from time to time. It happens on other forums too, but by far most frequently on this one. Sometimes it works fine for a few weeks, then one day it just stops working altogether...
Best regards,
Henning
ChristianKolinski
...is anyone else having this problem?
Nothing has actually been changed.
Regards,
Mirko
If I remember correctly, I’ve asked about a similar issue before; specifically, the (T-Online?) nameserver was having problems with the .eu domain. “fotolaborforum.eu” worked, but “www.fotolaborforum.eu” didn’t. It happens every 1 to 2 weeks. To get round it, I usually just politely remove the "www". The redirect from .de to .eu doesn’t always work either, but a refresh usually helps.
Regards,
Christian
cfb_de
Hi Christian,
> that the (T-Online?) nameserver
Nah, I don’t think they’re to blame for that. Mirko’s nameservers are run by Schlund, aka “United Internet”, and are located in Karlsruhe, not Bonn.
It’s not Mirko’s fault; he’s really just being controlled by others on this one :-)
Best regards,
Franz
ChristianKolinski
Hi Christian,
> that the (T-Online?) nameserver
isn’t to blame for this. Mirko’s nameservers are provided by Schlund, aka “United Internet”, and are located in Karlsruhe, not Bonn.
And that’s exactly what I haven’t been able to figure out yet (though I haven’t spent much time on it either) – whether it’s a problem in the nameserver hierarchy (i.e. T-Online queries the wrong server or uses outdated caches), or whether a nameserver at UI goes haywire now and then; both are capable of it.
However, as I was able to (reproducibly) work around the error by switching to the university’s name server, my current suspicions point away from T-Online and towards UI.
I’ll take a closer look next time it happens, though.
Regards
Christian
u_d
Hi everyone,
In my opinion, this has nothing to do with the name servers, but rather with how the web server handles the redirect for the domain name being accessed. WWW.fotoimpex.de and www.fotolaborforum.de
both point to the same IP address. The response isn’t the usual ‘domain not found’ message or anything like that, but a webpage with a ‘Retry’ button.
Best regards,
Ulrich
ChristianKolinski
Hi everyone,
In my opinion, this has nothing to do with the name servers, but rather with how the web server handles the redirect for the domain name being accessed. WWW.fotoimpex.de and www.fotolaborforum.de
both point to the same IP address. The response isn’t the usual ‘domain not found’ message or anything like that, but a webpage with a ‘Retry’ button.
Regards,
Ulrich
Capitalisation doesn’t matter in the domain name anyway (though it does matter in the path after the /).
However, the forum isn’t hosted on fotolaborforum.de (217.160.87.190) but on .eu (217.160.28.133). When you try to access .de, you’re redirected to .eu. And if you get this on .eu:
(T-Online NS)
** server can’t find www.fotolaborforum.eu: NXDOMAIN
instead of:
(Intergenia NS)
Non-authoritative answer:
Name: www.fotolaborforum.eu
Address: 217.160.28.133
then the redirects aren’t working either.
If the redirect itself isn’t working for you: Have you installed any pop-up blockers or anything like that? Is there a proxy server in your connection?
Regards
Christian
RomanMS
Hi, that’s definitely a nameserver issue. The caching on the BIND server probably isn’t working properly here. I’ve tried resolving it from various locations. I got a response now and then.
Best regards,
Roman
MirkoBoeddecker
So, you’ve written me off now.
Is there anything I can do?
Best regards,
Mirko
cfb_de
Of course.
- Link the thread to your provider.
- Your provider, apparently. Rough and ready.
Result: None.
- “Regrettable isolated incident”
- “Not responsible”
Those would be your likely options.
It would be smarter if, in future, when reporting faults, you referred directly to your provider in your forum (“Unfortunately, nothing’s working here again; I contacted the ‘Weißegeiergeilesinternet’ helpline on ?? ?? ?? at ??:??”).
Incidentally, since Telekom went on strike, their service seems to be working perfectly for the first time. Times are apparently better than ever.
Best regards,
Franz
Renate
Hello,
I’ve been having these problems for many months now, but they’ve become much more frequent. I’ve mentioned this before in another thread.
When I boot up Debian Linux, I generally can’t access the forum. This happens regardless of which browser I use. Even reinstalling Debian Linux to a more recent version didn’t help. The issue is unrelated to the internet service provider I use. I’m having these problems on two computers, each connected to completely different home networks. Even with the firewall disabled, the problem persists.
When I boot into Windows 2000 on the same machines, the forum always works. So the nameserver can’t be the problem, as they’re always the same.
I could imagine that the redirection to .eu might be a possible issue. Direct access to .eu is unfortunately not possible; I only reach the construction site there. The security settings in Debian Linux are significantly more stringent than those in Win2k. I currently have no experience with XP. However, XP is being made increasingly secure through regular updates, whereas in Win2k only security-critical vulnerabilities are being patched. In abstract: if nothing has changed on the website, then it must be XP that has changed. I encountered the problem the last time something was changed on the website. At that time, a change was made to combat spam.
As redirects are often used by phishers and other criminal elements, they do pose a security risk.
Best regards
Renate
RomanMS
Hi,
I have to disagree again.
It’s definitely down to name resolution!
If you handle the name resolution yourself and add the following entry to your ‘hosts’ file:
217.160.28.133 www.fotolaborforum.eu
(On Linux in /etc, on Windows I’m not sure [c:/Windows/system32 or something like that])
then it works.
That should now remove any doubt as to the cause.
Regards,
Roman
Renate
Hello,
When I enter the IP address, I only get to the ‘Under Construction’ page and can’t access the forum from there. But at least I can get onto the site.
When I switch between Win2k and Debian Linux, I always use the same nameserver, and in one case it always works, whilst in the other it never does. So it can’t be down to the nameserver, as that never changes.
I did mention this above, but I’m repeating it here for clarity.
Best regards
Renate
RomanMS
Hi,
Please, Renate, I’ve even provided proof. As for the ‘under construction’ sign – or rather, the fact that you can’t see the forum properly just by entering the IP address – that makes sense, doesn’t it? After all, it’s not the only website hosted on that IP.
Just do yourself a favour and look up the name yourself via your hosts file, as I described. Normally, ‘file before NS’ works. Then you’ll see.
The fact that the page works for you or not, depending on your system, has something to do with your local setup and is certainly not the same issue, but an additional problem that appears alongside the one affecting everyone else. I’d now try checking if something in your overall network configuration is causing a problem (routes, etc.). It’s also possible that a script is running that handles firewalling, etc.
Further explanations can be found on specialist websites or in books about TCP/IP, network configurations, routing and name resolution. ...
Regards
Roman
Renate
Hello Roman,
I have to disagree with you on that.
It can’t be down to local conditions, because TWO computers are exhibiting the same behaviour, and both computers are 12 km apart and are integrated into completely different networks. Even the computers are configured differently. It is also worth noting that both computers, when booted with Knoppix, manage to forward the request. Knoppix is, as is well known, a variant of Debian Linux. This prompted me to update my Debian to a newer version. However, this did not have any reference to this forum. I am not aware of all the changes Knopper has made to his system.
To my surprise, adding the line to /etc/hosts actually works, and I cannot explain why. When I enter the IP address directly into the browser under Debian Linux, I also bypass the name resolution and still get the ‘Server not found’ message. This reinforces my suspicion that a security setting may be responsible.
However, I also suspect one or more issues with the configuration of Mirko’s server. It seems that several small errors must be interacting. The entry in hosts bypasses not only the nameserver but also the redirection. Redirection usually works for me on other websites, but not in this case.
Until recently, I was the only user experiencing this problem, and I’ve had it for months. This also contradicts the theory about the name server.
The issue is not trivial and can only be resolved through a joint effort between the user and the administrator. That is why I am writing in such detail, in the hope that someone will spot a connection that I have overlooked.
Best regards
Renate
RomanMS
>> It can’t be down to local conditions, because TWO computers >> are exhibiting the same behaviour, and both computers are 12 km
>> apart
Ah, so that can’t possibly be it?
>> and are both connected to completely different networks. Even the >> computers are configured differently.
And they have the same error. Both running Debian?
>> that both computers, when booted with
>> Knoppix, manage to resolve the forwarding.
And so that doesn’t happen for you locally?
>> To my surprise, adding the line to /etc/hosts
>> actually works, and I can’t explain it
Surprise!
>> If I enter the IP directly into the browser under Debian Linux, I
>> bypass the name resolution and still get the message,
>> ‘Server not found’.
I’ve already written something about this; please have another read, or rather, what should the browser be displaying? Several web pages at once?
>> That reinforces my suspicion that a
>> security setting might be responsible for this.
And specifically on your local machine.
>> With the entry in hosts, you bypass not only the nameserver,
>> but also the redirection.
I’d now like this sentence explained to me in simple terms for Unix/Linux/Solaris technicians.
>> Until recently, I was the only user experiencing this problem
You weren’t.
>> and I’ve had it for months. That also contradicts the
>> theory about the name server.
Once again, please read carefully what I wrote above – did I write “It’s down to name resolution and that’s responsible for all your errors”?
I simply cannot believe that anyone can ignore evidence so skilfully. Helloooo!
>>The issue isn’t trivial and can only be resolved through a joint effort
>>between user and administrator. That’s why I’m writing
>>in such detail,
But I can’t find any meaningful information; you’re just describing symptoms in broad terms.
>>in the hope that someone will spot a connection that I
>>have overlooked.
Tell me where you live or give me read access to your computer via SSH or similar, and give me fifteen minutes.
Regards
Renate
Hello
I have neither the inclination nor the time to deal with Roman’s vanity. That doesn’t help the forum or its accessibility in the slightest.
As a woman, I’m used to people assuming I’m a ‘dumb blonde’. That’s just how many men are, and it seems to be no different here in the forum.
Anyone who wants to work constructively on the problem is welcome to discuss it with me; anyone who just wants to show off will be ignored by me.
Best regards,
Renate
ChristianKolinski
Hello
I’ve neither the inclination nor the time to get involved in Roman’s petty squabbles. That doesn’t help the forum or its accessibility in the slightest.
As a woman, I’m used to people assuming I’m a ‘dumb user’. That’s just how many men are, and it seems to be no different here in the forum.
Sorry, but what you’re describing is definitely not normal for Debian,
nor is it down to any obscure ‘security settings’ – Debian doesn’t have anything like that as a reference – but simply to a poorly configured computer. It doesn’t matter how far apart they are.
And whether you’re male or female has nothing to do with being a DAU or not.
And dismissing advice as male vanity just because it doesn’t fit your world view isn’t going to help solve the problem either.
Your Debian is simply set up badly, that’s all.
heinrich
Hello,
I’ve been having the problem described above for about three weeks now; I can’t access the forum using either Firefox or Opera. It works fine with Konqueror.
Oh, and my operating system is Suse Linux 10.2. As far as I know, I haven’t made any changes to my browser or internet settings in the meantime, so there must be external reasons for this. Unless one of the many patches installed weekly via the online update has something to do with it. I can’t check the latter, as I’m a bit of a computer novice and just glad the machine is working.
Regards,
Heinrich
