构建企业内部域名服务器（1）

构建缓存域名服务器

实现方法：

1.首先查看cache-name-server软件包又没有安装

#rpm –qa | grep caching-nameserver

#rpm –ivh caching-nameserver-9.3.3.-7-el5-i386.rpm

2.建立缓存域名服务器文件named.conf

#vi /var/named/chroot/etc/named.conf

options {

    listen-on port 53 { 192.168.100.1; };

    directory   "/var/named";

    dump-file   "/var/named/data/cache_dump.db";

    statistics-file "/var/named/data/named_stats.txt";

    memstatistics-file  "/var/named/data/named_mem_stats.txt";

    query-source port 53;

    allow-query { 192.168.100.0/24; };

    recursion yes;

};

zone "." IN {

    type hint;

    file "named.ca";

};

3.确认根域地址数据库文件named.ca

#ls /var/named/chroot/var/named/named.ca

4.启动named服务

#service named start

#netstat –anpl | grep :53

tcp        0      0 192.168.100.1:53            0.0.0.0:*                   LISTEN      6354/named         

udp        0      0 0.0.0.0:53                  0.0.0.0:*                               6354/named         

udp        0      0 192.168.100.1:53            0.0.0.0:*                               6354/named         

udp        0      0 0.0.0.0:5353                0.0.0.0:*                               3749/avahi-daemon: 

udp        0      0 :::5353                     :::*                                    3749/avahi-daemon: 

5.验证缓存域名服务器