RHEL5 DNS服务器配置

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53856943 2008-12-08 13:17:07 博主文章分类：『Linux相关』

RHEL5 DNS服务器配置

试验环境
1.装有RHEL5系统计算机一台；server:192.168.1.102
2.客户机一台；pc:192.168.1.252
3.两主机课通信；
4.server可与互联网通信；

实验目的
1.dns服务器包的安装；
2.正向区域和反向区域的建立；
3.正向和反向的测试；

实验步骤：

第一步：安装dns服务器包；

[root@yixia ~]#mount /dev/cdrom /mnt
[root@yixia ~]#cd /mnt/Server
[root@yixia Server]# rpm -ivh bind-9.3.3-7.el5.i386.rpm
[root@yixia Server]# rpm -ivh bind-chroot-9.3.3-7.el5.i386.rpm
[root@yixia Server]# rpm -ivh caching-nameserver-9.3.3-7.el5.i386.rpm

第二步：建立主配置文件，并修改相关选项；

[root@yixia ~]#cd /var/named/chroot/etc
[root@yixia etc]#cp -p named.caching-nameserver.conf named.conf
[root@yixia etc]#vi named.conf
... ...
options {
        listen-on port 53 { any; };       //侦听接口；
        listen-on-v6 port 53 { ::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;
        query-source-v6 port 53;
        allow-query     { any; };        //允许查询哪些主机查询；
};

logging {
        channel default_debug {
                file "data/named.run";
                severity dynamic;
        };
};

view localhost_resolver {
        match-clients      { any; };        //匹配任何主机
        match-destinations { any; };
        recursion yes;
        include "/etc/named.rfc1912.zones";    //调用区域文件；
};

第三步：建立正向区域和反向区域；

[root@yixia ~]# vi /var/named/chroot/etc/named.rfc1912.zones
在文件末尾添加一下内容，并保存推出；

zone "xyz.com" IN {
        type master;
        file "xyz.com.db";
};

zone "1.168.192.in-addr.arpa" IN {
        type master;
        file "192.168.1.rev";
};

第四步：建立对应的区域文件；

[root@yixia ~]#cd /var/named/chroot/var/named
[root@yixia named]#vi xyz.com.db             //建立正向解析区域文件；

$TTL    86400
xyz.com             IN SOA ns.xyz.com.      [email]root@xyz.com[/email]. (
                                        42              ; serial (d. adams)
                                        3H              ; refresh
                                        15M             ; retry
                                        1W              ; expiry
                                        1D )            ; minimum

                IN NS           ns.xyz.com.
                IN MX 10       mail.xyz.com.
ns              IN A            192.168.1.102
mail            IN A            192.168.1.103
www             IN A            192.168.1.111
ftp             IN CNAME        [url]www.xyz.com[/url].

[root@yixia named]#vi 192.168.1.rev           //建立反向解析区域文件；
$TTL    86400
@       IN      SOA     ns.xyz.com. root.xyz.com. (
                                      1997022700 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
102       IN      NS      ns.xyz.com.
111       IN      PTR     [url]www.xyz.com[/url].

第五步：测试A记录和PTR记录；

注释：我用的是一台linux系统做客户机测试的；

[root@yixia ~]#nslookup
> [url]www.xyz.com[/url] //测试A记录；
Server:         127.0.0.1
Address:        127.0.0.1#53
Name:   [url]www.xyz.com[/url]
Address: 192.168.1.111
> 192.168.1.111 //测试PTR记录；
Server:         127.0.0.1
Address:        127.0.0.1#53
111.1.168.192.in-addr.arpa      name = [url]www.xyz.com[/url].
> ftp.xyz.com     //测试CNAME记录；
Server:         127.0.0.1
Address:        127.0.0.1#53
ftp.xyz.com     canonical name = [url]www.xyz.com[/url].
Name:   [url]www.xyz.com[/url]
Address: 192.168.1.111
> set type=ns //测试NS记录；
> xyz.com
Server:         127.0.0.1
Address:        127.0.0.1#53
xyz.com nameserver = ns.xyz.com.
> set type=mx    //测试mx记录；
> xyz.com
Server:         127.0.0.1
Address:        127.0.0.1#53
xyz.com mail exchanger = 10 mail.xyz.com.

*******************************************************************

试验扩展：

在本实验中可以单独创建自己的试图和区域定义文件；完整的配置如下：

[root@yixia ~]#cd /var/named/chroot/etc
[root@yixia etc]#cp -p named.caching-nameserver.conf named.conf
[root@yixia etc]#vi named.conf
options {
        listen-on port 53 { any; };
        listen-on-v6 port 53 { ::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;
        query-source-v6 port 53;
        allow-query     { any; };
};

logging {
        channel default_debug {
                file "data/named.run";
                severity dynamic;
        };
};

view localhost_resolver {
        match-clients      { localhost; };
        match-destinations { localhost; };
        recursion yes;
        include "/etc/named.rfc1912.zones";
};

view wnt {
        match-clients      { any; };
        match-destinations { any; };
        recursion yes;
        include "/etc/wnt.zones";
};

建立wnt.zones文件，内容为：

[root@yixia ~]#vi /var/named/chroot/etc/wnt.zones

zone "xyz.com" IN {
        type master;
        file "xyz.com.db";
};
zone "1.168.192.in-addr.arpa" IN {
        type master;
        file "192.168.1.rev";
};

[root@yixia ~]#vi /var/named/chroot/var/named/xyz.com.db

$TTL    86400
xyz.com             IN SOA ns.xyz.com.      [email]root@xyz.com[/email]. (
                                        42              ; serial (d. adams)
                                        3H              ; refresh
                                        15M             ; retry
                                        1W              ; expiry
                                        1D )            ; minimum

                IN NS           ns.xyz.com.
                IN MX 10       mail.xyz.com.
ns              IN A            192.168.1.102
mail            IN A            192.168.1.103
www             IN A            192.168.1.111
ftp             IN CNAME        [url]www.xyz.com[/url].

[root@yixia ~]#vi /var/named/chroot/var/named/192.168.1.rev

$TTL    86400
@       IN      SOA     ns.xyz.com. root.xyz.com. (
                                      1997022700 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
102       IN      NS      ns.xyz.com.
111       IN      PTR     [url]www.xyz.com[/url].

重启dns服务测试，结果跟上个试验是一样的，建议大家在实际中采用后
面的方法；这样dns配置的结构就比较清晰了。