centos7安装bind（DNS服务）

环境介绍

公网IP：149.129.92.239

内网IP：172.17.56.249

系统：CentOS 7.4

一、安装

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1	yum install bind bind-utils -y

　　

二、修改bind配置文件

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vim /etc/named.conf   options {     listen-on port 53 { any; }; #监听任何ip对53端口的请求     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; };  #接收任何来源查询dns记录       /*      - If you are building an AUTHORITATIVE DNS server, do NOT enable recursion.      - If you are building a RECURSIVE (caching) DNS server, you need to enable        recursion.      - If your recursive DNS server has a public IP address, you MUST enable access        control to limit queries to your legitimate users. Failing to do so will        cause your server to become part of large scale DNS amplification        attacks. Implementing BCP38 within your network would greatly        reduce such attack surface     */     recursion yes;       dnssec-enable yes;     dnssec-validation yes;       /* Path to ISC DLV key */     bindkeys-file "/etc/named.iscdlv.key";       managed-keys-directory "/var/named/dynamic";       pid-file "/run/named/named.pid";     session-keyfile "/run/named/session.key"; };   logging {         channel default_debug {                 file "data/named.run";                 severity dynamic;         }; };   zone "." IN {     type hint;     file "named.ca"; };   #增加一个a.com域名的解析，具体解析规则在/var/named/a.com.zone里 zone "a.com" IN {     type master;     file "a.com.zone"; };   #增加一个反向解析，即根据ip查域名（不需要的话可以不设置） zone "56.17.172.in-addr.arpa" IN {     type master;     file "172.17.56.zone"; };   include "/etc/named.rfc1912.zones"; include "/etc/named.root.key";

　　

三、配置解析文件

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[root@izj6c1w3z30pendgik4p4vz ~]# cat /var/named/a.com.zone $TTL 1D @   IN SOA  @ root.a.com. (                     0   ; serial                     1D  ; refresh                     1H  ; retry                     1W  ; expire                     3H )    ; minimum     NS  @     A         172.17.56.249 ;a.com的ip为172.17.56.249 www     A             172.17.56.249 ;www.a.com的ip解析为172.17.56.249  @       MX      10    mx.a.com.     ;a.com的mx记录为mx.a.com     AAAA          ::1               [root@izj6c1w3z30pendgik4p4vz ~]# cat /var/named/172.17.56.zone $TTL 86400 @       IN      SOA     localhost a.com. (                          2014031101                          2H                          10M                          7D                          1D )                  IN      NS      localhost. 249                  IN      PTR     a.com ;172.17.56.249查询后得到的域名是a.com 249                IN      PTR     www.a.com. ;172.17.56.249查询后得到的域名是www.a.com

　　

四、启动bind

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1	systemctl  start  named

　　

五、测试

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1、修改dns配置/etc/resolv.conf [root@izj6c1w3z30pendgik4p4vz ~]# cat /etc/resolv.conf options timeout:2 attempts:3 rotate single-request-reopen nameserver 172.17.56.249   2、解析测试 [root@izj6c1w3z30pendgik4p4vz ~]# ping a.com -c 2 PING a.com (172.17.56.249) 56(84) bytes of data. 64 bytes from a.com.56.17.172.in-addr.arpa (172.17.56.249): icmp_seq=1 ttl=64 time=0.016 ms 64 bytes from a.com.56.17.172.in-addr.arpa (172.17.56.249): icmp_seq=2 ttl=64 time=0.048 ms   --- a.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1000ms rtt min/avg/max/mdev = 0.016/0.032/0.048/0.016 ms [root@izj6c1w3z30pendgik4p4vz ~]# ping www.a.com -c 2 PING www.a.com (172.17.56.249) 56(84) bytes of data. 64 bytes from www.a.com (172.17.56.249): icmp_seq=1 ttl=64 time=0.019 ms 64 bytes from www.a.com (172.17.56.249): icmp_seq=2 ttl=64 time=0.052 ms   --- www.a.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 999ms rtt min/avg/max/mdev = 0.019/0.035/0.052/0.017 ms [root@izj6c1w3z30pendgik4p4vz ~]# nslookup  a.com Server:     172.17.56.249 Address:    172.17.56.249#53   Name:   a.com Address: 172.17.56.249   [root@izj6c1w3z30pendgik4p4vz ~]# dig  www.a.com   ; <<>> DiG 9.9.4-RedHat-9.9.4-73.el7_6 <<>> www.a.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56816 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 3   ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.a.com.         IN  A   ;; ANSWER SECTION: www.a.com.      86400   IN  A   172.17.56.249   ;; AUTHORITY SECTION: a.com.          86400   IN  NS  a.com.   ;; ADDITIONAL SECTION: a.com.          86400   IN  A   172.17.56.249 a.com.          86400   IN  AAAA    ::1   ;; Query time: 0 msec ;; SERVER: 172.17.56.249#53(172.17.56.249) ;; WHEN: Wed Jun 05 09:58:34 CST 2019 ;; MSG SIZE  rcvd: 112

　　

六、公网使用与测试

1、修改之前的文件与启动

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[root@izj6c1w3z30pendgik4p4vz ~]# cat /etc/named.conf #增加一个反向解析，即根据ip查域名（不需要的话可以不设置） zone "92.129.149.in-addr.arpa" IN {     type master;     file "149.129.92.zone"; };   [root@izj6c1w3z30pendgik4p4vz ~]# cat   /var/named/149.129.92.zone $TTL 86400 @       IN      SOA     localhost a.com. (                          2014031101                          2H                          10M                          7D                          1D )                  IN      NS      localhost. 239                  IN      PTR     a.com ;149.129.92.239查询后得到的域名是a.com 239                IN      PTR     www.a.com. ;149.129.92.239查询后得到的域名是www.a.com   [root@izj6c1w3z30pendgik4p4vz ~]# cat /var/named/a.com.zone $TTL 1D @   IN SOA  @ root.a.com. (                     0   ; serial                     1D  ; refresh                     1H  ; retry                     1W  ; expire                     3H )    ; minimum     NS  @     A         149.129.92.239 www     A             149.129.92.239   @       MX      10    mx.a.com.     ;a.com的mx记录为mx.a.com     AAAA          ::1   #重启bind systemctl  restart named

　　

2、防火墙开防53的udp端口对外

3、电脑或服务器更改dns

 

4、测试