dns 服务器配置

1、安装 named

2、配置如下文件：

/etc/named.conf

//
  2 // named.conf
  3 //
  4 // Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
  5 // server as a caching only nameserver (as a localhost DNS resolver only).
  6 //
  7 // See /usr/share/doc/bind*/sample/ for example named configuration files.
  8 //
  9 
 10 options {
 11         listen-on port 53 { any; };
 12         //listen-on-v6 port 53 { ::1; };
 13         directory       "/var/named";
 14         dump-file       "/var/named/data/cache_dump.db";
 15         statistics-file "/var/named/data/named_stats.txt";
 16         memstatistics-file "/var/named/data/named_mem_stats.txt";
 17         allow-query     { any; };
 18         recursion yes;
 19 
 20         dnssec-enable yes;
 21         dnssec-validation yes;
 22         dnssec-lookaside auto;
 
 24         /* Path to ISC DLV key */
 25         bindkeys-file "/etc/named.iscdlv.key";
 26 
 27         managed-keys-directory "/var/named/dynamic";
 28 };
 29 
 30 logging {
 31         channel default_debug {
 32                 file "data/named.run";
 33                 severity dynamic;
 34         };
 35 };
 36 
 37 zone "." IN {
 38         type hint;
 39         file "named.ca";
 40 };
 41 
 42 include "/etc/named.rfc1912.zones";
 43 include "/etc/named.root.key";
 44 

/etc/namd.rfc1912/zones

// named.rfc1912.zones:
  2 //
  3 // Provided by Red Hat caching-nameserver package
  4 //
  5 // ISC BIND named zone configuration for zones recommended by
  6 // RFC 1912 section 4.1 : localhost TLDs and address zones
  7 // and http://www.ietf.org/internet-drafts/draft-ietf-dnsop-default-local-zo    nes-02.txt
  8 // (c)2007 R W Franks
  9 //
 10 // See /usr/share/doc/bind*/sample/ for example named configuration files.
 11 //
 12 
 13 zone "917.cs" IN {
 14         type master;
 15         file "123.cs.zone";
 16 };
 17 
 18 zone "1.168.192.in-addr.arpa" IN {
 19         type master;
 20         file "1.168.192.zone";
 21 };
 22 
23 zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.ar    pa" IN {
 24         type master;
 25         file "named.loopback";
 26         allow-update { none; };
 27 };
 28 
 29 zone "1.0.0.127.in-addr.arpa" IN {
 30         type master;
 31         file "named.loopback";
 32         allow-update { none; };
 33 };
 34 
 35 zone "0.in-addr.arpa" IN {
 36         type master;
 37         file "named.empty";
 38         allow-update { none; };
 39 };
 40 

　　反向解析

/var/named/1.168.192.zone

1 $TTL 86400
  2 @       IN SOA    ns.123.cs. root.123.cs (
  3                                         12      ; serial
  4                                         28800   ; refresh
  5                                         14400   ; retry
  6                                         3600000 ; expire
  7                                         86400 ) ; minimum
  8 @        IN     NS      ns.123.cs.
  9 249      IN     PTR     mail.123.cs.
 10 249      IN     PTR     ns.123.cs.
 11 230      IN     PTR     img.123.cs

　　正向解析

/var/named/123.cs.zone

1 $TTL 86400
  2 @       IN SOA  ns.123.cs. root.123.cs (
  3                                         1       ; serial
  4                                         1D      ; refresh
  5                                         1H      ; retry
  6                                         1W      ; expire
  7                                         3H )    ; minimum
  8 @       IN         NS     ns.123.cs.
  9 @       IN         MX 5   mail.123.cs.
 10 ns      IN         A      192.168.1.249
 11 www   IN        A       192.168.1.230
 12 mail    IN         A      192.168.1.249
 13 img     IN         A      192.168.1.230
 25 pop3    IN          CNAME  mail
 26 smtp    IN          CNAME  mail

　　

启动：service named start

修改pc机 dns

vim /etc/resolv.conf