Linux配置DNS正向和反向解析练习

基于redhat 9进行演示

一.正向解析

1.下载bind

2.编辑主配置文件

3.在工作目录下新建区域文件

4.指定解析域名IP

5.重启named并测试配置好了的域名

二.反向解析

1.编辑主配置文件，新添加区域用于反解

2.在工作目录下新建区域文件

3.重启named并测试

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一.正向解析

1.下载bind

[root@redhat9-1 ~]# yum install -y bind

2.编辑主配置文件

[root@redhat9-1 ~]# vim /etc/named.conf
options {
        listen-on port 53 { any; };        #将监听端口改为任意或本机IP
        listen-on-v6 port 53 { ::1; };
        directory       "/var/named";     #区域文件工作目录路径
        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";
        secroots-file   "/var/named/data/named.secroots";
        recursing-file  "/var/named/data/named.recursing";
        allow-query     { any; };
};
logging {
        channel default_debug {
                file "data/named.run";
                severity dynamic;
        };
};
zone "ssll.com" IN {       #指定区域
        type master;       #指定type类型
        file "ssll.com";   #指定区域文件
};

3.在工作目录下新建区域文件

[root@redhat9-1 ~]# vim /var/named/ssll.com
$TTL 1D
@       IN      SOA     dns.ssll.com.   test.163.com ( 0 1D 1H 1W 3H )                                            
        IN      NS      dns.ssll.com.
        IN      MX      10      mail.ssll.com.
dns.ssll.com.           IN      A       192.168.2.138
www.ssll.com.          IN      A       192.168.2.135
wwww    IN      CNAME    www

4.指定解析域名IP

/etc/resolv.conf——DNS客户机配置文件，用于设置DNS服务器的IP地址及DNS域名，还包含了主机的域名搜索顺序

[root@redhat9-1 ~]# vim /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.2.138

5.重启named并测试配置好了的域名

[root@redhat9-1 ~]# systemctl restart named
[root@redhat9-1 ~]# nslookup www.ssll.com
Server:         192.168.2.138
Address:        192.168.2.138#53

Name:   www.ssll.com
Address: 192.168.2.135

[root@redhat9-1 ~]# nslookup dns.ssll.com
Server:         192.168.2.138
Address:        192.168.2.138#53

Name:   dns.ssll.com
Address: 192.168.2.138

二.反向解析

1.编辑主配置文件，新添加区域用于反解

zone "2.168.192.in-addr.arpa" IN {    #网段反写并指定反解关键字
        type master;
        file "192.168.2";
};

2.在工作目录下新建区域文件

[root@redhat9-1 ~]# vim /var/named/192.168.2
$TTL 1D
@       IN      SOA     www.llss.com.   admin.llss.com. ( 0 1D 1H 1W 3H )
        IN      NS      www.llss.com.
        IN      MX      10      mail.llss.com.

138     IN      PTR     www.llss.com.
135     IN      PTR     dns.llss.com.

3.重启named并测试

[root@redhat9-1 ~]# systemctl restart named
[root@redhat9-1 ~]# nslookup 192.168.2.138
138.2.168.192.in-addr.arpa      name = www.llss.com.
[root@redhat9-1 ~]# nslookup 192.168.2.135
135.2.168.192.in-addr.arpa      name = dns.llss.com.