linux_DNS反向解析、主从服务器、分离解析

向右看齐 2021-07-26 23:15 595阅读 0赞

### DNS反向解析 ###

*  一.DNS反向解析实验步骤
 *   *  1.安装bind软件包
     *  2.修改主配置文件
     *   *  3.修改区域配置文件，添加反向区域配置
         *   *  4.配置反向区域数据文件
             *   *  5.关闭防火墙、开启域名解析服务、修改DNS地址
     *  二.构建主从服务器
     *   *  1. 修改主区域服务器的区域配置文件，修改正、反区域配置
         *  三.DNS服务器分离解析
         *   *  2.操作步骤
             *   *  1.安装bind软件包
                 *  2.修改主配置文件
                 *  3.修改区域配置文件
                 *  4.修改区域数据配置文件
                 *  5.启动服务

# 一.DNS反向解析实验步骤 #

## 1.安装bind软件包 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center]

## 2.修改主配置文件 ##

vim /etc/named.conf
    options { 
      listen-on-v6 poet 53 {  any; };              #监听53端口，IP地址使用提供服务的本地IP，也可用any代表所有
     listen-on-v6 port 53 {  : :1; };                      #ipv6行如不使用可以注释掉或者删除
      directory       "/var/named";                          #区域数据文件的默认存放位 置
      dump- file      "/var/ named/data/cache_ dump . db";   #域名缓存数据库文件的位置
      statistics-file "/var/named/data/named stats.txt";     #状态统计文件的位置
      memstatistics-file "/var/named/data/named_ mem_ stats. txt";    #内存统计文件的位置
      allow-query       {  any; };                            #允许使用本DNS解析服务的网段，也可用any代表所有

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 1]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 2]

### 3.修改区域配置文件，添加反向区域配置 ###

vim /etc/named. rfc1912. zone               #文件里有模版，可复制粘贴后修改
    zone "100.168.192. in-addr.arpa" IN {         #反向解析的地址倒过来写，代表解析192.168.100段的地址
             type master;
             file "abc. com. zone. local";    #指定区域数据文件为benet.com.zone.local
             allow-update {  none; } ;

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 4]

#### 4.配置反向区域数据文件 ####

cd /var/ named/
    cp -p named. localhost abc. com. zone. local
    vim /var/ named/ abc. com. zone. local
    $TTL 1D
    @       IN SOA abc. com. admin. abc. com. (      #这里的“@"代表192.168.100段地 
                           0     ； serial
                           1D    ； refresh
                           1H    ； retry
                           1W    ； expi re
                           3H )  ； minimum
             NS   abc. com.
             A    192.168.100.10
    200 IN PTR    WWW . abc. com.                       #PTR为反向指针，反向解析192.168.100.200地址结果为www . benet. com.

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 5]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 6]

##### 5.关闭防火墙、开启域名解析服务、修改DNS地址 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 7]

根据IP地址，查找所对应的域名：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 8]

## 二.构建主从服务器 ##

*  需要两台虚拟机，一台做主服务器，一台做从服务器

### 1. 修改主区域服务器的区域配置文件，修改正、反区域配置 ###

vim /etc/ named. rfc1912. zone
    zone "abc.com" IN { 
             type master;                         #类型为主区域
             file "abc. com. zone";
             allow-transfer {  192.168.133.20; } ;  #允许从服务器下载正向区域数据，这里添从服务器的IP地址
    };
    
    zone "133.168.192. in-addr.arpa" IN { 
           type master;
    file "abc. com. zone.local";
    allow-transfer {  192. 168.133.20; } ;
    };

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 9]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 10]  
以客户机身份指定从服务器dns地址  
![在这里插入图片描述][20210224043406167.png_pic_center]

（2）**修改从域名服务器的主配置文件**

yum -y install bind
    vim /etc/named.conf
    options { 
        listen-on port 53 {  any; };	#监听53端口，ip地址使用提供服务的本地IP即可，也可用any代表所有
     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";	
        recursing-file  "/var/named/data/named.recursing";
        secroots-file   "/var/named/data/named.secroots";
        allow-query     {  any; }; 				#允许使用本DNS解析服务的网段，也可用any代表所有
    	……
    ｝

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 11]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 12]  
（3）修改从域名服务器区域配置文件，添加正、反区域配置

vim /etc/named.rfc1912.zones
    zone "abc.com" IN { 
    		type slave;							#类型为从区域
    		masters {  192.168.133.13; };			#指定主服务器的IP地址
    		file "slaves/abc.com.zone";   	#下载的区域数据文件保存到slaves/目录下
    };
    
    zone "133.168.192.in-addr.arpa" IN { 	
            type slave;
    		masters {  192.168.133.13; };
            file "slaves/abc.com.zone.local";
    };

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 13]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 14]

（4）主、从都重启动服务，关闭防火墙，并查看区域数据文件是否已下载成功

![在这里插入图片描述][20210224042845748.png_pic_center]

（5）在客户端的域名解析配置文件中添加从DNS服务器地址

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 15]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 16]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 17]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 18]

（6）测试

host www.abc.com
    nslookup www.abc.com
    
    #停止主服务器的服务，模拟主服务器故障
    systemctl stop named
    host www.abc.com
    nslookup www.abc.com

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 19]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 20]

验证方法2：  
开启一台虚拟机，修改网卡，改为主从服务器的DNS：

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 21]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 22]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 23]

### 三.DNS服务器分离解析 ###

分离解析的域名服务器实际也是主域名服务器，这里主要是指根据不同的客户端提供不同的域名解析记录。比如来自内网和外网的不同网段地址的客户机请求解析同一域名时，为其提供不同的解析结果。

1、为网关服务器配置双网卡  
在关机状态下再添加一块网卡，重启系统

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 24]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 25]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 26]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 27]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 28]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 29]查看另外一台虚拟机网卡

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 30]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 31]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 32]  
修改window :VMnet2

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 33]再修改WIndows IP地址：

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 34]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 35]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 36]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 37]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 38]

#### 2.操作步骤 ####

##### 1.安装bind软件包 #####

![在这里插入图片描述][20210224171901593.png_pic_center]

##### 2.修改主配置文件 #####

vim /etc/named.conf
    options { 
            listen-on port 53 {  any; };      			#监听本机或者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";        
            recursing-file  "/var/named/data/named.recursing";
            secroots-file   "/var/named/data/named.secroots";
            allow-query     {  any; };        			#允许所有主机解析
    		……
    };
    
    include "/etc/named.rfc1912.zones";

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 39]

##### 3.修改区域配置文件 #####

vim /etc/named.rfc1912.zones
    view "lan" { 								#定义内网view，view代表容器分割
    	match-clients {  192.168.133.0/24; };    	#匹配内网网段
    	zone "abc.com" IN {     				#设置要解析的区域
    		type master;   				 
    		file "abc.com.zone.lan";   	 	#数据配置文件
    	};      
    	  zone "133.168.192.in-addr.arpa" IN {   ---反向可不写
            type master;
            file "abc.com.zone.local.lan";
      };
    	zone "." IN { 		#可将根域配置从主配置文件剪切过来，dd+p
    		type hint;		#hint是根区域类型
    		file "named.ca";
    	};      
    };
     
    view "wan" {      							#定义外网view
        match-clients {  any; };					#匹配除了内网网段以外的任意地址
        zone "abc.com" IN { 
            type master;
            file "abc.com.zone.wan";
        };
          zone "0.0.10.in-addr.arpa" IN {    -----反向可不写
            type master;
            file "abc.com.zone.local.wan";
      };
    };
    
    #注意：一旦启用view，所有的zone必须都在view下，所以要把系统默认的自检用的zone也放在view下或者删除

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 40]

##### 4.修改区域数据配置文件 #####

cd /var/named
    cp -p named.localhost abc.com.zone.lan
    cp -p named.localhost abc.com.zone.wan
    cp -p named.localhost abc.com.zone.local.lan
    cp -p named.localhost abc.com.zone.local.wan
    
    vim abc.com.zone.lan
    $TTL 1D
    @       IN SOA  abc.com. admin.abc.com. (
                                            0       ; serial
                                            1D      ; refresh
                                            1H      ; retry
                                            1W      ; expire
                                            3H )    ; minimum
            NS      abc.com.
            A       192.168.133.20
    www IN 	A       192.168.163.100		#内网主机通过解析www.abc.com的地址得到192.168.133.200
    
    vim abc.com.zone.wan
    $TTL 1D
    @       IN SOA  lisi.com. admin.abc.com. (
                                            0       ; serial
                                            1D      ; refresh
                                            1H      ; retry
                                            1W      ; expire
                                            3H )    ; minimum
            NS      abc.com.
            A       12.0.0.1
    www IN	A       12.0.0.100				#外网主机通过解析www.abc.com的地址得到12.0.0.100
    
    vim abc.com.zone.local.lan 
    
    
    
    ---------------反向可不做：
    
    $TTL 1D
    @       IN SOA  abc.com. admin.abc.com. (
                                            0       ; serial
                                            1D      ; refresh
                                            1H      ; retry
                                            1W      ; expire
                                            3H )    ; minimum
            NS      abc.com.
            A       192.169.133.20
    100  IN PTR       www.abc.com.
    
    vim lisi.com.zone.local.wan 
    $TTL 1D
    @       IN SOA  abc.com. admin.abc.com. (
                                            0       ; serial
                                            1D      ; refresh
                                            1H      ; retry
                                            1W      ; expire
                                            3H )    ; minimum
            NS      abc.com.
            A       12.0.0.1
    100 IN  PTR     www.abc.com.

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 41]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 42]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 43]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 44]

##### 5.启动服务 #####

![在这里插入图片描述][20210224192725886.png_pic_center]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 45]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 46]

vim /etc/resolv.conf :修改DNS，改为本机：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1dzeHlp_size_16_color_FFFFFF_t_70_pic_center 47]进行解析：nslookup www.abc.com

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进入win10虚拟机内：ping

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win10进行解析 ：进入命令提示符，输入nslookup www.abc.com  
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