在CentOS上搭建Chroot 的Bind DNS服务器的方法

[root@centos7 ~]# yum install bind-chroot bind -y

[root@centos7 ~]# cp -R /usr/share/doc/bind-*/sample/var/named/* /var/named/chroot/var/named/

[root@centos7 ~]# touch /var/named/chroot/var/named/data/cache_dump.db
[root@centos7 ~]# touch /var/named/chroot/var/named/data/named_stats.txt
[root@centos7 ~]# touch /var/named/chroot/var/named/data/named_mem_stats.txt
[root@centos7 ~]# touch /var/named/chroot/var/named/data/named.run
[root@centos7 ~]# mkdir /var/named/chroot/var/named/dynamic
[root@centos7 ~]# touch /var/named/chroot/var/named/dynamic/managed-keys.bind

[root@centos7 ~]# chmod -R 777 /var/named/chroot/var/named/data
[root@centos7 ~]# chmod -R 777 /var/named/chroot/var/named/dynamic

[root@centos7 ~]# cp -p /etc/named.conf /var/named/chroot/etc/named.conf

[root@centos7 ~]# vi /var/named/chroot/etc/named.conf</p> <p> -</p> <p> ..
..
zone "example.local" {
type master;
file "example.local.zone";
};

zone "0.168.192.in-addr.arpa" IN {
type master;
file "192.168.0.zone";
};
..
..</p> <p>named.conf 完全配置如下：</p> <p> //
// named.conf
//
// 由Red Hat提供，将 ISC BIND named(8) DNS服务器
// 配置为暂存域名服务器 (用来做本地DNS解析).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//

options {
listen-on port 53 { 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";
allow-query { any; };

/*
- 如果你要建立一个 授权域名服务器 服务器, 那么不要开启 recursion（递归） 功能。
- 如果你要建立一个 递归 DNS 服务器, 那么需要开启recursion 功能。
- 如果你的递归DNS服务器有公网IP地址, 你必须开启访问控制功能，
只有那些合法用户才可以发询问. 如果不这么做的话，那么你的服
服务就会受到DNS 放大攻击。实现BCP38将有效抵御这类攻击。
*/
recursion yes;

dnssec-enable yes;
dnssec-validation yes;
dnssec-lookaside auto;

/* 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";
};

zone "example.local" {
type master;
file "example.local.zone";
};

zone "0.168.192.in-addr.arpa" IN {
type master;
file "192.168.0.zone";
};

include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";

[root@centos7 ~]# vi /var/named/chroot/var/named/example.local.zone

;
; Addresses and other host information.
;
$TTL 86400
@ IN SOA example.local. hostmaster.example.local. (
2014101901 ; Serial
43200 ; Refresh
3600 ; Retry
3600000 ; Expire
2592000 ) ; Minimum

; Define the nameservers and the mail servers

IN NS ns1.example.local.
IN NS ns2.example.local.
IN A 192.168.0.70
IN MX 10 mx.example.local.

centos7 IN A 192.168.0.70
mx IN A 192.168.0.50
ns1 IN A 192.168.0.70
ns2 IN A 192.168.0.80

[root@centos7 ~]# vi /var/named/chroot/var/named/192.168.0.zone</p> <p> -</p> <p> ;
; Addresses and other host information.
;
$TTL 86400
@ IN SOA example.local. hostmaster.example.local. (
2014101901 ; Serial
43200 ; Refresh
3600 ; Retry
3600000 ; Expire
2592000 ) ; Minimum

0.168.192.in-addr.arpa. IN NS centos7.example.local.

70.0.168.192.in-addr.arpa. IN PTR mx.example.local.
70.0.168.192.in-addr.arpa. IN PTR ns1.example.local.
80.0.168.192.in-addr.arpa. IN PTR ns2.example.local.

[root@centos7 ~]# /usr/libexec/setup-named-chroot.sh /var/named/chroot on
[root@centos7 ~]# systemctl stop named
[root@centos7 ~]# systemctl disable named
[root@centos7 ~]# systemctl start named-chroot
[root@centos7 ~]# systemctl enable named-chroot
ln -s '/usr/lib/systemd/system/named-chroot.service' '/etc/systemd/system/multi-user.target.wants/named-chroot.service'