RE: Bind9 / Cox reverse lookup

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Author: Keith Smith
Date:  
To: Main PLUG discussion list
Subject: RE: Bind9 / Cox reverse lookup

Bind is working. Thank you for your insight and help!!

Now its off to get the mail server running.


On 2015-10-06 09:57, Rusty Ramser wrote:
> "Thank you for your help!!"
> No worries, mate. If I'm actually providing any help :) you're quite
> welcome.
>
>
> It sounds like to me you're wanting to use name-based virtual hosts on
> Apache. Like thus:
> http://httpd.apache.org/docs/2.4/vhosts/name-based.html
>
> If you will have one public IP address for your multiple domains (aka,
> web
> sites), then you will need an entry in an external DNS hoster for each.
> Each domain DNS record will point to the same public IP address (your
> single
> web server). And then it will be up to your Apache server to see
> www.wheresmycar.net, www.dogsmakingfaces.com, and
> www.localbeerspecials.com
> serve up the appropriate web site. (Note: I'm just guessing that
> those are
> the three web sites you're using; don't know for sure.)
>
> Your web server's non-routable internal IP address shouldn't really
> ever
> come into play during normal usage scenarios. Sure, if you enter the
> IP
> locally on your system you'll get the default page, but that's not
> really
> what external users will ever do. Once you have external DNS host
> records
> set up for each domain, you should be able to test the name-based
> Apache
> functionality. Or, if you want to do that locally before advertising
> external DNS addresses you should be able to make some temporary
> /etc/hosts
> entries on your web server which all point to its non-routable IP, just
> as a
> test.
>
> Cheers.
>
>
> -----Original Message-----
> From:
> [mailto:plug-discuss-bounces@lists.phxlinux.org] On Behalf Of Keith
> Smith
> Sent: Tuesday, October 6, 2015 12:27
> To: Main PLUG discussion list <>
> Subject: RE: Bind9 / Cox reverse lookup
>
>
> Thank you for your help!!
>
> Cox provides the public / routable IP which is set on my router /
> modem.
>
> I have a web server that servers several websites. I use NAT for port
> forwarding to that one box.
>
> Without a DNS server, either local or external, how will Apache know
> which
> site to server up? If I put the IP in my browser I get the default
> "website" which is no website at all - it is the default welcome page.
>
>
> -----Original Message-----
> From:
> [mailto:plug-discuss-bounces@lists.phxlinux.org] On Behalf Of Rusty
> Ramser
> Sent: Tuesday, October 6, 2015 12:10
> To: 'Main PLUG discussion list' <>
> Subject: RE: Bind9 / Cox reverse lookup
>
> I'm not sure that's a valid assumption, regarding needing a DNS server
> even
> with that functionality. Maybe it is in your specific use, but it
> doesn't
> strike me as a guaranteed necessity.
>
> The learning aspect of it, however, is something I can't debate. If
> that's
> part of your goals, then by all means run wild with it. :)
>
> Cheers.
>
>
> -----Original Message-----
> From:
> [mailto:plug-discuss-bounces@lists.phxlinux.org] On Behalf Of Keith
> Smith
> Sent: Tuesday, October 6, 2015 12:03
> To: Main PLUG discussion list <>
> Subject: RE: Bind9 / Cox reverse lookup
>
> I assume I need a DNS server since the box is a web server and will be
> hosting a couple websites and there will be email as well. And part of
> the
> reason I am doing this is to learn.
>
>
>
> -----Original Message-----
> From:
> [mailto:plug-discuss-bounces@lists.phxlinux.org] On Behalf Of Rusty
> Ramser
> Sent: Tuesday, October 6, 2015 11:53
> To: 'Main PLUG discussion list' <>
> Subject: RE: Bind9 / Cox reverse lookup
>
> From the scenario you describe, no, I don't see that creating your own
> reverse lookup zone would be necessary.
>
> Your web server has no other internal systems in your environment to
> look
> up. And for external reverse lookups using the public information
> (from
> Cox, Google, OpenDNS, or whatever your preference) should be fine. I
> wouldn't create something that would just require extra
> management/maintenance when there's no real use case for it.
>
> (Actually, for just a single box that is only accepting NATed web
> traffic,
> I'm not even sure I understand the need for a forward lookup zone on
> your
> server. Is there some reason that its client DNS configuration can't
> just
> point to your preferred DNS provider? Do you really need a DNS server
> functioning on the box?)
>
> Cheers.
>
>
> -----Original Message-----
> From:
> [mailto:plug-discuss-bounces@lists.phxlinux.org] On Behalf Of Keith
> Smith
> Sent: Tuesday, October 6, 2015 11:14
> To: Main PLUG discussion list <>
> Subject: RE: Bind9 / Cox reverse lookup
>
>
> Thanks Rusty.
>
> It is one box. It is on a non-routable IP. I use NAT for ports 80,
> 443,
> 53... etc.
>
> So are you saying I need to make a reverse lookup for the non-routable
> IP?
>
> Thanks!!
> Keith
>
>
> -----Original Message-----
> From:
> [mailto:plug-discuss-bounces@lists.phxlinux.org] On Behalf Of Rusty
> Ramser
> Sent: Tuesday, October 6, 2015 11:05
> To: 'Main PLUG discussion list' <>
> Subject: RE: Bind9 / Cox reverse lookup
>
> Hi, Keith.
>
> Will your environment be needing to do internal lookups based upon IP?
> For
> instance, are you using a non-routable set of IP addresses (e.g.,
> 10.x.x.x,
> 192.168.x.x) for your environment behind NAT, and will those systems
> need to
> perform name resolution of each other based upon IP? If so, yes,
> you'll
> want to have your own internal reverse lookup zone because obviously
> Cox (or
> any other public DNS provider) will not have that information.
>
> If you really don't need any internal reverse name resolution, then
> there
> may be no need to create a zone. For instance, there isn't an
> "environment"
> of servers you have, it's just this single web server. And the web
> server
> doesn't have any internal network it sits on, it's just got a public,
> routable IP address.
>
> Cheers.
>
>
> -----Original Message-----
> From:
> [mailto:plug-discuss-bounces@lists.phxlinux.org] On Behalf Of Keith
> Smith
> Sent: Tuesday, October 6, 2015 10:11
> To: Main PLUG discussion list <>
> Subject: Bind9 / Cox reverse lookup
>
>
> Hi,
>
> I'm configuring Bind9 on my web server connected to Cox. Cox
> configures the
> IP reverse lookup.
>
> Do I still need to create a reverse zone file?
>
> The reverse zone file is to lookup the host by IP correct?
>
> Thank you for your help!!
>
> Keith
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Keith Smith
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