2011-01-24 16:43:45 
阿炯
PowerDNS Authoritative Server (PDNS) 是一个高性能的权威 DNS 名字服务器，支持文本的 BIND 配置，也可将配置存储与 MySQL, Oracle, PostgreSQL, SQLite, MongoDB 等数据库，后端可使用多种编程语言进行扩展。
PowerDNS consists of two parts: the Authoritative Server and the Recursor. Other nameservers fully combine these functions, PowerDNS offers them separately, but can mix both authoritative and recursive usage seamlessly. The Authoritative Server will answer questions about domains it knows about, but will not go out on the net to resolve queries about other domains. However, it can use a recursing backend to provide that functionality. Depending on your needs, this backend can either be the PowerDNS recursor or an external one.
When the Authoritative Server answers a question, it comes out of the database, and can be trusted as being authoritative. There is no way to pollute the cache or to confuse the daemon.
The Recursor, conversely, by default has no knowledge of domains itself, but will always consult other authoritative servers to answer questions given to it.
PDNS has been designed to serve both the needs of small installations by being easy to setup, as well as for serving very large query volumes on large numbers of domains.
Another prime goal is security. By the use of language features, the PDNS source code is very small (in the order of 10.000 lines) which makes auditing easy. In the same way, library features have been used to mitigate the risks of buffer overflows.
Finally, PDNS is able to give a lot of statistics on its operation which is both helpful in determining the scalability of an installation as well as for spotting problems.
最新版本：3.2这是一个稳定版，适合更新。该版本让 DNSSEC 实现更加可靠以及提升不同验证器之间的互操作性；测试覆盖更多边沿问题等等。
官方主页：http://www.powerdns.com/
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基于web的管理工具-PowerDNS Administrator
PowerDNS Administrator 或者 PDNS-Admin ，是一个基于 Web 的 PowerDNS 管理程序。
PowerDNS 是一个跨平台的开源DNS服务组件。
最新版本：1.2
新版本增加对新的数据库的支持，修复了一些bug，还有新功能，修复了安全方面的问题。
项目主页：http://pdnsadmin.iguanadons.net/