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<p><FONT class=normalfont><B><font color=blue>redhat7.2DNS配置笔记</font></B></FONT><BR><FONT class=smallfont color=#ff9900>2004-04-23 15:18 pm</FONT><BR><FONT class=normalfont>作者:alenxcn<br>来自:Linux知识宝库<br>联系方式:无名<br><br>  域名服务系统DNS,它运行在TCP协议之上,负责将字符名——域名转换成实际相对应的IP地址。这个过程就是域名解析,负责域名解析的机器就叫域名服务器。(2002-10-28 13:04:38) By alenxcn<br>
<br>
  最近在重高手的帮助下,终于配置好了dns服务。现在把个人总结写出,希望对像我一样刚学linux的朋友有所帮助。<br>
<br>
测试环境:<br>
<br>
  操作系统:redhat 7.2<br>
<br>
一、实例环境:<br>
<br>
  1。一个c类网段地址:202.101.55.0<br>
<br>
  2。公司注册域名:longyu.edu<br>
<br>
  3.域名服务器IP为:202。101。55。1 主机名:www<br>
<br>
  4.要解析的服务器有:<br>
<br>
<br>
  www.longyu.edu (web服务器)<br>
  mail.longyu.edu(email 服务器)<br>
<br>
二、安装前准备工作:<br>
<br>
  1。首先安装bind<br>
<br>
  这里你可以采有两种方式安装,一种是直接安装rpm包,另一种是自已编译。我建议安装rpm包,既方便又省事。<br>
<br>
  安装完成后应该在/ect目录下生成named.conf文件和/var/named目录<br>
<br>
  2。必须保证系统/etc/有以下2个文件:/etc/resolve.conf和/etc/host.conf<br>
<br>
  resolve.conf文件内容如下:<br>
<br>
<br>
   domain longyu.edu<br>
   nameserve 202.101.55.1<br>
<br>
  /ect/host.conf文件内容如下:<br>
<br>
<br>
   ord hosts,bind<br>
   multi off<br>
<br>
三、dns的主配置文件/ect/named.conf<br>
<br>
  named.conf文件内容如下:<br>
<br>
<br>
  options {<br>
    directory '/var/named';<br>
  };<br>
<br>
  zone '.' {<br>
    type hint;<br>
    file 'named.ca';<br>
  } <br>
  zone 'localhost' IN {<br>
    file "localhost.zone"<br>
    allow-update{none;};<br>
  };<br>
  zone '0.0.127.in-addr.arpa'{<br>
    type master;<br>
    file 'named.local';<br>
  };<br>
<br>
  zone 'longyu.edu'{<br>
    type master;<br>
    file 'longyu.edu';<br>
  };<br>
<br>
  zone '55.101.202.in-addr.arpa'{<br>
    type master;<br>
    file '55.101.202';<br>
  };<br>
  include "/etc/rndc.key";<br>
<br>
注释:<br>
<br>
  文件的第一部分option指定域数据文件都存放在/var/name目录下,一般情况不做修改。<br>
<br>
  文件第二部分,zone"."定义了根域信息,也就是当域名服务器收到域名查询时,发现客户查询请求时,发现客户希望查询的域名不是本地域名是,它就会查询询/etc/named.ca中定义的根域名服务器,直到最终得到自己希望查询的域名。<br>
<br>
  文件的第三部分zone "localhost" 和 zone "0.0.127.in-addr-arpa"定义了本地回路的正反向解析,一般不修改。<br>
<br>
  文件的第四部分是关键,这里设置我们想要的域名。<br>
<br>
  定义了域longyu.edu的相关信息。<br>
<br>
  master是指该服务器为主域服务器<br>
<br>
  type指定该哉性质<br>
<br>
  hint指根域<br>
<br>
四、配置dns正向域名转换数据文件/var/named/longyu.edu.<br>
<br>
<br>
  $ TTL 86400<br>
  $ ORLGIN longyu.edu.<br>
  @ 1D IN SOA ns.longyu.edu. root.longyu.edu.<br>
       (42; serial (d.adams)<br>
        3H; refresh<br>
        15M; retry<br>
        1w; expiry<br>
        1D;);minimum<br>
  @ 1D IN NS longyu.edu.<br>
  @ 1D IN MX 10 mail.longyu.edu.<br>
      1D IN A 202.101.55.1<br>
  www 1D IN A 202.101.55.1<br>
  ns 1D IN A 202.101.55.1<br>
  mail 1D IN A 202.101.55.1<br>
<br>
五。DNS反向域名解析转抵换数据文件/var/named/202.101.55<br>
<br>
<br>
  TTL<br>
  @ IN SOA ns.longyu.edu. root.longyu.edu.(<br>
    19997022700;serial<br>
    28800; refresh<br>
    14400; retry<br>
    3600000; expire<br>
  @ IN NS longyu.edu.<br>
  1 IN PTR longyu.edu. <br>
  2 IN PRT mail.logyu.edu.<br>
  4 IN PRT ns.longyu.edu.<br>
<br>
注释:<br>
<br>
  1。SOA是主服务器一定要设置的命令,通常入在第一行<br>
<br>
  2。最前面的符号“@”代表目前所管辖的域。 “IN”代表地址类别,这里就是固定使用“IN”的。<br>
<br>
  3。填入域名服务器,记住由于DNS数据文件的特殊格式规定,在最后一定要加上“·”我们填入ns.longyu.edu.<br>
<br>
  4.域名服务器管理员的E-MAIL地址,但要注意的是,E-Mail地址中的分隔符“@”在这里用“·”来代替,在最后也要加上“。”,在这里,我们相应写入:“root.longyu.edu.<br>
<br>
  OK,到此就已经基本配置完了,接下来测试 最简单的方法就是ping longyu.edu,另一种方法是nslookup<br>
<br>
  我是刚学linux,也许有些地方写的不对,还忘众高手指正。我只是希望对像我一样刚学linux的朋友有所帮助。<br>
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