The Open Road: Alternative Nameservers - PowerDNS

Wednesday, 26 February 2003, 1:07 PM EST

PowerDNS is an authoritative-only nameserver. This means that it will answer queries about zones that it is responsible for, but it won't attempt to find information on another zone/domain. For example, if you set up PowerDNS to handle "," it won't answer queries for "" or "". This means that you don't have to worry about a poorly configured (or maliciously configured) server polluting your nameserver's cache. It can use a number of database backends or a BIND-type named.conf to store records. Interestingly, it also includes a built-in Web server to allow you to check out performance information and statistics in realtime.

PowerDNS also supports IPv6 and queries over UDP, but I won't cover the IPv6 features here since the protocol is still so seldom used. I also will not cover the UDP stuff specifically.

Interestingly, the software was at one time a commercial offering, but the folks who maintain PowerDNS decided that it was better to try to sell support for PowerDNS than to try to sell licenses. This is a pretty recent development; the company released the source under the GPL last November. They also sell a service using PowerDNS for companies to manage their DNS for domains, mail, and Web redirection, which you can find at PowerDNS Express.

[ Read more ]


Credential manager system used by Cisco, IBM, F5 has been breached

Pearson VUE is part of Pearson, the world's largest learning company. Over 450 credential owners (including IT organizations such as IBM, Adobe, etc.) across the globe use the company's solutions to develop, manage, deliver and grow their testing programs.

Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.

Daily digest

Receive a daily digest of the latest security news.

Wed, Nov 25th