[ale] Can't connect to port 53

[Lightner, Jeff]

+1

Network Solutions also allows you to put DNS records on their sites for domains you registered with them including MX and CNAME records.   PTR records would need to be setup with the ISP of course if you required any.

Having said that I do think you can change things more quickly on your own DNS servers and you can point the Registrar records to your DNS servers.

From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Richard Bronosky
Sent: Friday, January 18, 2013 6:22 PM
To: Atlanta Linux Enthusiasts - Yes! We run Linux!
Subject: Re: [ale] Can't connect to port 53


Most decent domain registrars offer free basic DNS housing for the domains you register there. Even GoDaddy offers that.
On Jan 18, 2013 2:34 PM, "Jim Lynch" <ale_nospam at fayettedigital.com<mailto:ale_nospam at fayettedigital.com>> wrote:
On 01/18/2013 11:48 AM, Michael H. Warfield wrote:
On Fri, 2013-01-18 at 09:38 -0500, Jim Lynch wrote:
Hi, Mike,
Thanks.  I hate to admit it here 'cause I know general consensus here
about webmin and gui's in general, but I was trying to generate a zone
using webmin/dns.  It obviously didn't do what I thought it should.  As
I said before I gotta do a bit more digging so I understand this stuff a
bit better.  You're example helps a lot.  Thanks for that.
Ok...  That tells me a couple of important things.

If you are generating a zone file, you must be setting up an
authoritative name server.
I guess.  The free dns servers seem to be drying up and going to a paid model.  I find it hard to pay as much for dns services as I do the systems themselves, so I'm digging into running my own dns servers.  I actually have 3 different VPS systems to play with and figured I'd run dns servers on at least two of them to serve everyone.  I'm just starting my investigation.

Even if you set up a proper zone file and have that configured
correctly, you still must configure the name server itself to listen on
the network.  That's not in the zone file at all.  That's part of the
global named.conf configuration.
I am vaguely aware of that requirement.  One advantage I have is that two of the three servers have (I think) working dns servers configured properly (virtualmin generated).  I was trying, step by step, to duplicate using webmin.  I know I can just copy the config files over from another working system, make changes specific to that system and it should work, however for educational value I'm trying to see what webmin is doing.  I now know I didn't go far enough.

Since you are able to telnet to localhost on port 53 you're obviously on
the machine hosting the nameserver so you should be able to
edit /etc/named.conf and inspect its content.

I should also point out as well that telnet to port 53 is TCP where as
most DNS is going to operate over UDP with TCP as a fallback for larger
transfers like zone transfers.  The name server will listen on both TCP
and UDP sockets for the same addresses but also be sure your firewall
rules are consistent for TCP and UDP.
OK good info.  I turned off the firewall for testing.

AFA nslookup goes...  Another poster was correct in that nslookup
deprecated and discouraged by the original authors (ISC - Internet
Systems Consortium).

The reason for this is that nslookup uses its own peculiar internal
resolver and operates differently from "host" and "dig" as well as
normal name resolution lookups.  It may present results which are
inconsistent with the behavior of those two supported tools and other
applications doing name lookups.  It may work perfectly fine in most
simple cases but it has been stated that its behavior can be
"inconsistent" (due to its use of that internal resolver).  It hasn't
been updated in ages and may not support some of the newer DNS features,
either.

 From ISC:

http://www.isc.org/software/bind/documentation/arm95#id2547410
OK so it's time to come out of the '90s.  I do move slowly as I approach ancient age.  (No not capitalized so no whiskey here)

Thanks again,
Jim.





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