Date: Sun, 7 Mar 2010 12:31:28 -0800 From: George Georgalis <george@galis.org> To: "Marcin M. Jessa" <lists@yazzy.org> Cc: freebsd-isp@freebsd.org Subject: Re: Registrars with free DynDNS services of my own domains. Message-ID: <20100307203128.GJ1737@bonnie> In-Reply-To: <4B90CDE4.6060903@yazzy.org> References: <4B82F976.8020308@yazzy.org> <20100303214256.GC23997@bonnie> <4B90CDE4.6060903@yazzy.org>
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On Fri 05 Mar 2010 at 10:24:52 AM +0100, Marcin M. Jessa wrote: >On 03/03/2010 10:42 PM, George Georgalis wrote: >>On Mon 22 Feb 2010 at 10:39:02 PM +0100, Marcin M. Jessa wrote: >>>Hi guys. >>> >>>Many registrars offer free DNS hosting if you register your domain >>>with them. >>>I need a bit more. I need a registrar which not only will "host" my >>>own domains but also in exchange give me >>>a dyndns service so I can automatically update the @ records of my >>>domains as an extra free of charge service. >>>Do you guys know of any registrars that can do that? >> >>*snip* resulting discussion... >> >>perhaps this is the magic cookie you where looking for? >> >>in your registrar, add a couple cname entries for your dynamic hosts... >> >>www 800 IN CNAME userid.dyndns.org. >>@ 800 IN CNAME userid.dyndns.org. >> >>then www.yourdomain.com and yourdomain.com resolves to your dynamic ip >> > >Thanks for trying but you're missing the point. I knew all the way >about the method you suggested. >It's all about updating of SOA and A records of a domain.tld. You >should read entire thread... I didn't see a reason for you not to use CNAME like this, it's not what you asked for but that doesn't mean you didn't know of the technique. ;-) I'm just trying to be nice. >My solution was to rent a small Xen DomU host with NetBSD which I'm >using as my secondary DNS so I don't have to run it on dynamic IP. There is a slew of reasons not to run SOA from a dynamic ip, not the least of which is the chance your isp will begin enforcing the TOS which probably prohibits running a server. And once you are depending on 2nd dns, it's not really a redundant system, is it? Suppose, someone in your dynamic subnet gets your ip and happens to run a NS with wildcards... since there is no requirement for caching servers to respect TTL in SOA records (it's the start after all), that server will answer incorrect records for you as long as it has your old ip. Unlikely scenario, but certainly possible. http://marc.info/?l=djbdns&m=103505741508241&w=2 I use to run SOA, and still do for private networks. If you are scripting the process of bringing new hosts online fine, use your static IP, otherwise it is hard to justify circumventing the convenience of editing your records in a vcs, and pasting them into your registrar's dns interface. If for some reason you don't want to use your registrar's NS, I suggest you put your primary and 2nd NS on your Xen box. It's less complicated and less likely to break than a dynamic SOA setup.
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