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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Not be ornery but honestly, for me, globs of text that is pasted into an email is TLDR because I cannot *<b>do</b>* anything with it. So I skip it out of hand.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">A real tcpdump packet capture is a file that can be loaded by wireshark and analyzed.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">tcpdump -n -i <interface eg eth0> port 53 -w <filename.pcap><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">One from the client and one from the server is ideal.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">John<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></a></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> bind-users [mailto:bind-users-bounces@lists.isc.org]
<b>On Behalf Of </b>Diego Garcia<br>
<b>Sent:</b> Saturday, January 15, 2022 7:38 AM<br>
<b>To:</b> bind-users@lists.isc.org<br>
<b>Subject:</b> Re: your mail<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">hello.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">really? my first post have a tcpdump capture packet, dig trace...<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Sat, Jan 15, 2022 at 2:14 PM G.W. Haywood via bind-users <<a href="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi there,<br>
<br>
On Sat, 15 Jan 2022, Diego Garcia wrote:<br>
<br>
> Still with problems. That setup was running fine for few years.<br>
<br>
But you changed something.<br>
<br>
> Bind Server is on DMZ and doing NAT for the local net. Test Server is<br>
> behing NAT<br>
><br>
> Must have another problem<br>
><br>
> I try this days a lot of things and nothing works,<br>
<br>
Generally speaking, if you set things up right, BIND Just Works. It<br>
must be a couple of decades since I last had to fiddle with anything<br>
to fix a broken BIND server.<br>
<br>
It is not helpful to us if you tell us that you have tried a lot of things.<br>
It would be much more helpful if you told us exactly what you have tried<br>
and exactly what were the results. You need to be methodical and precise.<br>
<br>
> think in try reinstall but i preferred to know what happened and solve it<br>
<br>
'Reinstall' to me means the sort of thing that you do if you're<br>
working on a Windows box. If you're using a real computer it's<br>
usually much better to find out what's going wrong and fix it.<br>
<br>
> ...<br>
> network unreachable resolving '<a href="http://play.google.com/A/IN" target="_blank">play.google.com/A/IN</a>': 216.239.36.10#53<br>
> ...<br>
<br>
If you are getting 'network unreachable' messages then likely there's<br>
something wrong with your network setup. Before doing anything else,<br>
you need to fix that. It may or may not be a problem of your making,<br>
but given that you said you are using BIND on a server in a DMZ then I<br>
suspect that it is. Using a DMZ will make things more complicated and<br>
the faults will be more difficult to diagnose - especially for people<br>
on mailing lists to whom you give little and very poor information.<br>
<br>
It *looks* like BIND is trying to make queries but failing to connect<br>
to anything to make them.<br>
<br>
You do not appear to have acted on the good advice which was given to<br>
you after your previous post. Are you able to use tools like 'ping'<br>
and 'traceroute' to diagnose network problems, also like Wireshark or<br>
tcpdump to inspect network traffic? These would be my first steps in<br>
approaching this kind of problem. You will need to know that packets<br>
from the BIND server can go where they're supposed to go and replies<br>
reach the server in good time. You might also need to be able to see<br>
exactly what BIND sends, where it sends it, exactly what it receives<br>
(if anything) in reply to what it sends, and perhaps where the replies<br>
come from. If there are no replies, or the replies go to the wrong<br>
place, you need to be able to show that and find out why.<br>
<br>
What exactly are you trying to achieve which cannot be achieved by<br>
simply using a public DNS service, or one provided by your ISP?<br>
<br>
-- <br>
<br>
73,<br>
Ged.<br>
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