配置 DNS 反向解析

• 编辑DNS的/var/named/chroot/etc/view.conf添加如下行

zone "168.192.in-addr.arpa" {
        type    master;
        file    "168.192.zone";
        allow-transfer {
                192.168.85.32;
        };
        notify  yes;
        also-notify {
                192.168.85.32;
        };
  };

• 添加/var/named/chroot/etc/168.192.zone文件，内容如下

$TTL 3600       ; 1 hour
@                  IN SOA  op.lnh.com. dns.lnh.com. (
                                2009       ; serial #该值每次修改该配置文件必须增加，否则slave DNS不会同步
                                900        ; refresh (15 minutes)
                                600        ; retry (10 minutes)
                                86400      ; expire (1 day)
                                3600       ; minimum (1 hour)
                                )
                        NS      op.lnh.com.
288.85  IN      PTR     a.lnh.com.
~                                    

• DNS 重载配置文件

# rndc reload
WARNING: key file (/etc/rndc.key) exists, but using default configuration file (/etc/rndc.conf)
server reload successful

• 解析测试结果

# host 192.168.85.288 127.0.0.1