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<span style="font-weight:bolder; color:#3333FF"><span class="text_head0">鸟哥的<span class="text_head_en">
Linux </span>私房菜</span></span><br />
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<span class="text_head0"><span class="text_head_en">DNS </span>伺服器</span></a><br />
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<span class="text_history">最近更新日期∶2006/10/20</span>
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<!-- 本文的档头部分 -->
<table class="head1" summary="排版∶文章档头的说明"><tr><td class="head1">
我们知道电脑网路系统只认识所谓的 IP ，但是，您可能记得住网路上面所有主机的 IP 吗？
就鸟哥来说，连自己的主机的 IP 都记不起来了，怎么可能连其他的主机 IP 都记的住！
因为，人脑对于数字组成的 IP 的记忆实在是......不怎么样。
但是，相对来说，人们对于由文字所组成的主机名称那可以容易记忆的多了～
所以，才会发展出可以经由主机名称( hostname )对应到电脑
IP 的一个模式，这样我们就可以轻轻松松的记住主机名称即可，电脑 IP 那就交给
Domain Name System ( DNS )去搞定吧！<br /><br />
那个 DNS 系统是由柏克莱大学发展的 bind 这个套件( Berkeley
Internet Name Domain )所提供的啦！基本上，DNS 最主要的工作就是将 Hostname
对应到 IP 这个功能了，不过，要架设一个成功的 DNS 主机的话，还得要对于 DNS
的运作很清楚才行啊！否则架设的不对，还反而会造成大家的问题喔！这个章节当中，
要学会的资料其实还蛮多的，需要了解∶什么是正解、什么是反解、什么是 Zone、客户端
( Client ) 是经由什么咚咚来查询得到 IP 的呢？！以及 DNS 的授权问题等等。
哇！赶快清一清脑门，要好好的用功棉！ ^_^
</td></tr></table><br />
<!-- 本文的连结区部分 -->
<div class=block1>
<span class="text_h1">
1. <a href="#before">本章的行前准备工作</a><br />
2. <a href="#theory">甚么是 DNS </a>∶<br />
<span class="text_h2">
2.1 <a href="#Whatisdns">什么是 Domain Name System</a><br />
2.2 <a href="#DNS_search">DNS 的查询过程</a><br />
2.3 <a href="#DNS_register">关于『授权』的意义</a><br />
2.4 <a href="#DNS_settingorupper">网站代管还是自己设定 DNS</a><br />
2.5 <a href="#DNS_Zones">正解与反解的 Zone 意义</a><br />
</span>
3. <a href="#server_settings">DNS 伺服器的套件、种类与 cache only 主机设定</a>∶<br />
<span class="text_h2">
3.1 <a href="#what_software">架设 DNS 所需要的套件</a><br />
3.2 <a href="#what_pathway">BIND 的预设路径设定与 chroot</a>,
<a href="#sys_named">/etc/sysconfig/named</a><br />
3.3 <a href="#master_slave">DNS 的 master/slave 架构</a><br />
3.3 <a href="#forwards">单纯的 forward DNS 主机设定 (cache-only)</a><br />
</span>
4. <a href="#DNS_master">DNS Master 伺服器机的详细设定</a><br />
<span class=text_h2>
4.1 <a href="#DNS_master_case">一个简单案例说明</a><br />
4.2 <a href="#DNS_master_named.conf">/etc/named.conf 设定档</a><br />
4.3 <a href="#DNS_master_root">最上层 DNS (root) 资料库档案的设定</a><br />
4.4 <a href="#DNS_master_name">正解资料库档案的设定</a>∶ <a href="#rr_server">领域 RR</a>,
<a href="#rr_soa">master/slave RR</a>, <a href="#rr_ns">领域解析 NS</a>,
<a href="#rr_name">正解标⌨️ 快捷键说明
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