1. We never use our ISPs DNS. 2. We use the registrar's DNS for that specific domain.
3. We register domains using the same account on a certain registrar for a batch of domains. (Much easier to manage for when you manage hundreds - or thousands - of domains like we do.) 4.Internal DNS will resolve local domains/subdomains and we never had to pass DNS traffic which are destined to local machines to outside DNS servers, since those are local anyway. Save's traffic passing through our borders. 5. We only use one DNS server internally since it serves only local DNS requests. For external domains, it passes them on to OpenDNS. 6. All our internal DNS servers do not entertain externally-originating DNS traffic. For internal services that are reachable to the outside world, we do NAT/forwarding plus Apache proxying (single port 80, multiple subdomains), and we use the registrar DNS again to point to our public IP address. Bad move to centralize all your zones into one, two or three publicly accessible DNS server. For when these authoritative servers break down, you'll be left out hanging literally. And, you'll be hard pressed and scrambling to secure your publicly available DNS server unless you are using DJBDNS, IRONDNS, or SOLIDDNS or some other hardened DNS variant. On Wed, Jun 3, 2009 at 9:22 PM, Marvin Pascual <[email protected]> wrote: > Hello all, > > What do you think is the main reason or the importance of hosting your > own DNS when your ISP and/or Domain Registrar can host it for you for > FREE? > > Normally if you are going to host your own DNS for your organization, > ideally you need to run it at least on two (2) different machines > connected at least to two (2) different ISPs. > > Please share your thoughts. > > Thank you in advance. > > Regards, > > Marvin > _________________________________________________ > Kagay-Anon Linux Users' Group (KLUG) Mailing List > [email protected] (http://lists.linux.org.ph/mailman/listinfo/klug) > Searchable Archives: http://archives.free.net.ph > -- Part-time SysAd, full-time Dad, part-time netNinja CNS, ACFE, FOSS Advocate and Consultant Registered Linux User #400165 http://www.rm2media.net http://baudizm.blogsome.com http://linuxblazon.wordpress.com http://3x-comic.blogspot.com (NEW!)
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