[Ubuntu-PH] DNS Setup

Mon Oct 4 02:33:23 UTC 2010

Yes, that would mean a virtual machine for another DNS is not an ideal solution = if the host OS goes down and network problems , but for other DNS software related problems, the virtual machine is still capable of backing up, I think this is a poor setup. My current company setup is we do not have DNS servers on our own but hosted at ISP(PLDT). Registrar's built in DNS servers won't resolve to correct hostnames. 

----- Original Message -----
From: "hard wyrd" <hardwyrd at gmail.com> 
To: "Mailing List para sa Ubuntu Pilipinas (Philippines)" <ubuntu-ph at lists.ubuntu.com> 
Sent: Monday, October 4, 2010 10:03:52 AM 
Subject: Re: [Ubuntu-PH] DNS Setup 

Yeah that could work as well. However, I dont think it's ideal practice since if your link goes down, there's no DNS service to fallback to. And some registrars detect if the nameservers are on the same IP block. 

On Mon, Oct 4, 2010 at 10:00 AM, strong007 < strong007 at gmail.com > wrote: 

I believed it's possible to put two nameservers(having the same IP) with different names on your registrar 

On Monday, 04 October, 2010 09:37 AM, hard wyrd wrote: 

I think he needs two DNS servers (usual requirement from the registrar) that's publicly accessible. Doesn't have to be behind NAT. And since he has only one public IP address, he can setup a secondary DNS service somewhere else - zoneedit perhaps. 

On Mon, Oct 4, 2010 at 9:26 AM, Allan E. Registos < allan.registos at smpc.steniel.com.ph > wrote: 

Hi, 

The way I understood your problem is that you need two DNS servers behind NAT and you must setup two DNS servers. As others indicated, the 1st step of the solution is port-forwarding, the way you setup your webserver in your router. Second is you need two public IP addresses, one for your web server and at the same time a primary (can be secondary) DNS server, the other public IP is for the second/secondary DNS server. At least you need two machines behind NAT to power your Web and DNS servers. If your main machine is powerful enough, you can easily setup a virtual machine as a secondary or primary DNS server. 

Cheers, 
Allan 

From: "Eduardo Bergavera" < edbergavera at gmail.com > 
To: "Mailing List para sa Ubuntu Pilipinas (Philippines)" < ubuntu-ph at lists.ubuntu.com > 
Sent: Friday, October 1, 2010 7:30:12 PM 
Subject: Re: [Ubuntu-PH] DNS Setup 

Hi, 

Thank you for your replies. PHNET is the registry for the EDU.PH 
domain name. The provide domain registration, DNS hosting and web 
hosting services. However, we would like to run our own DNS for this 
purpose. Indeed for the setup that's behind the NAT port-forwarding is 
the solution. PHNET requires that you must register at least 2 
nameservers for validation. I will try to contact PHNET on this issue. 
Thanks again guys for your helpful suggestions. 

Mabuhay UBUNTU-PH community! 

On Fri, Oct 1, 2010 at 5:54 PM, Gabriel Briones < jond3rd at gmail.com > wrote: 
> Hi, 
> I've been doing DNS behind NAT before and it;s pretty straightforward to 
> setup. 
> Just NAT the DNS traffic the same way as you're NAT'ting the web server and 
> it should be fine. 
> 
> 
> 
> On Fri, Oct 1, 2010 at 5:48 PM, Eduardo Bergavera < edbergavera at gmail.com > 
> wrote: 
>> 
>> Gud day to all! 
>> 
>> I don't think if it's a noob question. I am planning to setup a DNS 
>> however this server is behind the NAT firewall. In this situation the 
>> DNS and as well as the Web server shares the same public IP. Our 
>> gateway router san only support ONE public IP address to be 
>> configured. the PH.net which is the domain registrar for EDU.PH 
>> requires applicants to register at least 2 nameserver IP address. 
>> Setting up DNS is straightforward however having it behind the NAT is 
>> a different issue. I would like to solicit your ideas or any possible 
>> ways to do this. Hoping for your help on this matter. 
>> 
>> Thanks. 
>> 
>> -- 
>> Eduardo D. Bergavera, Jr. 
>> IT Instructor 
>> Davao del Norte State College 
>> Panabo City, Philippines 8105 
>> Tel. #: (084) 628 4301 
>> email: edbergavera at gmail.com 
>> OpenID: https://launchpad.net/~edbergavera 
>> ACM Professional Member: http://member.acm.org/~edbergavera 
>> 
>> -- 
>> ubuntu-ph mailing list 
>> ubuntu-ph at lists.ubuntu.com 
>> https://lists.ubuntu.com/mailman/listinfo/ubuntu-ph 
> 
> 
> 
> -- 
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> 
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-- 
Eduardo D. Bergavera, Jr. 
IT Instructor 
Davao del Norte State College 
Panabo City, Philippines 8105 
Tel. #: (084) 628 4301 
email: edbergavera at gmail.com 
OpenID: https://launchpad.net/~edbergavera 
ACM Professional Member: http://member.acm.org/~edbergavera 

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