On Fri, 3 Nov 2006, jdow wrote:
From: "Bruno Wolff III" bruno@wolff.to
Edward Dekkers edward@tripled.iinet.net.au wrote:
Originally I thought I could just run DNS here on my Linux box. But apparently from what I understand of the reading I'm doing I'd need two servers to do this.
For a home DSL system having two DNS servers is overkill. If your network is down none of your services are going to be working anyway, so having a DNS on another network isn't going to help. Some registrars may enforce this requirement though. If so you might be able to make a deal with another person in a similar situation to provide DNS service for each other.
For more arguments on why you don't really need two DNS servers in this case see: http://cr.yp.to/djbdns/third-party.html
If it goes down for an extended period of time, as with a power loss and the UPS ran down, then when the UPS and machine come back up say a day or two later it will take a long time for the various DNS servers to find it again. It's better to have someone providing secondary name server for you. It's usually cheap. And you can configure it to update from your name server when you change your server's data.
And on top of that a minimum of 2 geographically diverse nameservers are required by RFC.
PLEASE, if your not going to do it right do NOT do it. When you think you have things setup correctly go here: http://www.dnsreport.com/ and see if you really do. you would be suprised how easy it is to get things wrong.
Regards,