DNS 反向解析

DNS反向解析

1，修改主配置文件：

listen-on port 53 { 127.0.0.1; 172.16.12.22; };

allow-query { any; };

recursion yes;

dnssec-enable no;

dnssec-validation no;

2，修改zone配置文件

zone "16.172.in-addr.arpa" IN {
        type master;
        file "172.16.zone";
};

3，添加反向解析配置文件

vim /var/named/172.16.zone

$TTL 1200
$ORIGIN 16.172.in-addr.arpa
@       IN      SOA     liubin.com.     nsadmin.liubin.com. (
        2017052401
        3H
        20M
        1W
        1D )
@       IN      NS      dns1.liubin.com.
@       IN      NS      dns2.liubin.com.
22.12   IN      PTR     dns1.liubin.com.
21.12   IN      PTR     dns2.liubin.com.
1.12    IN      PTR     www.liubin.com.
~

注意：
关闭防火墙，关闭SELinux

service named start

rndc reload

dig -x 172.16.12.1 @172.16.12.22

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.62.rc1.el6 <<>> -x 172.16.12.1 @172.16.12.22
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50612
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;1.12.16.172.in-addr.arpa.	IN	PTR

;; ANSWER SECTION:
1.12.16.172.in-addr.arpa. 1200	IN	PTR	www.liubin.com.

;; AUTHORITY SECTION:
16.172.in-addr.arpa.	1200	IN	NS	dns2.liubin.com.
16.172.in-addr.arpa.	1200	IN	NS	dns1.liubin.com.

;; Query time: 0 msec
;; SERVER: 172.16.12.22#53(172.16.12.22)
;; WHEN: Wed May 24 01:06:15 2017
;; MSG SIZE  rcvd: 108