3.反向解析

反向解析哪个ip地址段到名字
每个网段要建立一个反向区域

1.创建方向区域

cat /etc/named.rfc1912.zones

 zone "0.0.10.in-addr.arpa" {
	type master;
 	file "10.0.0.zone";
};

2.创建方向数据库文件

/var/named/10.0.0.zone

$TTL 1D
@	IN SOA	 dns1.cnpc.com.    dnsadmin.john.com. (
					0	; serial
					1D	; refresh
					1H	; retry
					1W	; expire
					3H )	; minimum
	NS	@#@表示继承dns1.cnpc.com
	A	127.0.0.1
201	PTR	ndsserver.a.com.

3.linux测试

点击查看代码

[root@centos7 named]#dig -x 10.0.0.100 @10.0.0.10

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.7 <<>> -x 10.0.0.100 @10.0.0.10
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 32286
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;100.0.0.10.in-addr.arpa.	IN	PTR

;; AUTHORITY SECTION:
#0.0.10.in-addr.arpa.	10800	IN	SOA	dns1.cnpc.com. admin.a.com. 0 86400 3600 604800 10800

;; Query time: 0 msec
;; SERVER: 10.0.0.10#53(10.0.0.10)
;; WHEN: Sun Nov 28 07:57:10 CST 2021
;; MSG SIZE  rcvd: 109

4.windwos测试

C:\Users\Administrator>nslookup
默认服务器:  UnKnown
Address:  10.0.0.10

> exit

C:\Users\Administrator>nslookup
#默认服务器:  ndsserver.a.com
Address:  10.0.0.10