Linux命令：DNS应用-白红宇

Linux命令：DNS应用

阅读量：7116 次

发布时间：2019-06-28

本文共 18721 字，大约阅读时间需要 62 分钟。

bind97：

/etc/named.conf

BIND进程的工作属性

区域的定义

/etc/rndc.key

rndc: Remote Name Domain Controller

密钥文件

配置信息：/etc/rndc.conf

/var/named/ 区域数据文件

/etc/rc.d/init.d/named {start|stop|restart|status|reload}

二进制程序：named

bind-chroot:

默认：named

用户：named

组：named

/var/named/chroot/

etc/named.conf

etc/rdnc.key

sbin/named

var/named/

[root@test ~]# yum list all |grep bind

This system is not registered with RHN.

RHN support will be disabled.

bind-libs.i386 30:9.3.6-4.P1.el5 installed

bind-utils.i386 30:9.3.6-4.P1.el5 installed

[root@test ~]# rpm -e bind-libs bind-utils

[root@test ~]# yum list all |grep bind

This system is not registered with RHN.

RHN support will be disabled.

bind.i386 30:9.3.6-4.P1.el5 Media

bind-chroot.i386 30:9.3.6-4.P1.el5 Media

一、bind安装

bind97下载地址：http://mirrors.ctyun.cn/centos/5/os/i386/CentOS/

[root@test ~]# rpm -ivh bind97-libs-9.7.0-21.P2.el5.i386.rpm

warning: bind97-libs-9.7.0-21.P2.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

Preparing... ################################### [100%]

1:bind97-libs ################################# [100%]

[root@test ~]# rpm -ivh bind97-utils-9.7.0-21.P2.el5.i386.rpm

warning: bind97-utils-9.7.0-21.P2.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

Preparing... ############################## [100%]

1:bind97-utils ############################ [100%]

[root@test ~]# rpm -ivh bind97-9.7.0-21.P2.el5.i386.rpm

warning: bind97-9.7.0-21.P2.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

Preparing... ############################## [100%]

1:bind97 ############################### [100%]

二、语法错误判断、日志查看、服务启动状态

[root@test etc]# vi named.conf

options {

directory "/var/named";

};

zone "." IN {

type hint;

file "named.ca";

};

zone "localhost" IN {

type master;

file "named.localhost";

};

zone "0.0.127.in-addr.arpa" IN {

type master;

file "named.loopback";

};

[root@test etc]# named-checkconf

[root@test etc]# named-checkzone "." /var/named/named.ca

zone ./IN: has 0 SOA records

zone ./IN: not loaded due to errors.

[root@test etc]# named-checkzone "localhost" /var/named/named.localhost

zone localhost/IN: loaded serial 0

[root@test etc]# named-checkzone "0.0.127.in-addr.arpa" /var/named/named.loopback

zone 0.0.127.in-addr.arpa/IN: loaded serial 0

[root@test etc]# service named start

Starting named: named: already running [ OK ]

[root@test etc]# service named restart

Stopping named: . [ OK ]

Starting named: [ OK ]

[root@test etc]# tail /var/log/messages

Dec 13 15:37:16 test named[29856]: command channel listening on 127.0.0.1#953

Dec 13 15:37:16 test named[29856]: zone 0.0.127.in-addr.arpa/IN: loaded serial 0

Dec 13 15:37:16 test named[29856]: zone localhost/IN: loaded serial 0

Dec 13 15:37:16 test named[29856]: running

[root@test ~]# vi /etc/resolv.conf

nameserver 110.19.131.131

search localdomain

[root@test ~]# dig -t NS .

; <<>> DiG 9.7.0-P2-RedHat-9.7.0-21.P2.el5 <<>> -t NS .

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6718

;; flags: qr rd ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 12

;; QUESTION SECTION:

;. IN NS

;; ANSWER SECTION:

. 16803 IN NS i.root-servers.net.

. 16803 IN NS a.root-servers.net.

. 16803 IN NS e.root-servers.net.

. 16803 IN NS k.root-servers.net.

. 16803 IN NS d.root-servers.net.

. 16803 IN NS b.root-servers.net.

. 16803 IN NS g.root-servers.net.

. 16803 IN NS c.root-servers.net.

. 16803 IN NS l.root-servers.net.

. 16803 IN NS h.root-servers.net.

. 16803 IN NS f.root-servers.net.

. 16803 IN NS j.root-servers.net.

. 16803 IN NS m.root-servers.net.

;; ADDITIONAL SECTION:

i.root-servers.net. 86400 IN A 192.36.148.17

i.root-servers.net. 17019 IN AAAA 2001:7fe::53

a.root-servers.net. 17019 IN A 198.41.0.4

a.root-servers.net. 17019 IN AAAA 2001:503:ba3e::2:30

e.root-servers.net. 29300 IN A 192.203.230.10

e.root-servers.net. 86400 IN AAAA 2001:500:a8::e

k.root-servers.net. 29300 IN A 193.0.14.129

k.root-servers.net. 17019 IN AAAA 2001:7fd::1

d.root-servers.net. 29300 IN A 199.7.91.13

d.root-servers.net. 17019 IN AAAA 2001:500:2d::d

b.root-servers.net. 16803 IN A 192.228.79.201

b.root-servers.net. 17019 IN AAAA 2001:500:84::b

;; Query time: 38 msec

;; SERVER: 10.109.131.131#53(10.109.131.131)

;; WHEN: Wed Dec 14 08:14:20 2016

;; MSG SIZE rcvd: 505

[root@test ~]# ping www.163.com

PING 163.xdwscache.ourglb0.com (113.107.57.41) 56(84) bytes of data.

64 bytes from 113.107.57.41: icmp_seq=1 ttl=53 time=39.4 ms

64 bytes from 113.107.57.41: icmp_seq=2 ttl=53 time=38.3 ms

--- 163.xdwscache.ourglb0.com ping statistics ---

2 packets transmitted, 2 received, 0% packet loss, time 1013ms

rtt min/avg/max/mdev = 38.381/38.924/39.468/0.578 ms

[root@test ~]# chkconfig --list named

named 0:off 1:off 2:off 3:off 4:off 5:off 6:off

[root@test ~]# chkconfig named on

[root@test ~]# chkconfig --list named

named 0:off 1:off 2:on 3:on 4:on 5:on 6:off

[root@test ~]#

三、创建本地NS正向域

[root@test ~]# vi /etc/named.conf

... #新增以下部分

zone "jacktest.com" IN {

type master;

file "jacktest.com.zone";

};

[root@test ~]# named-checkconf /etc/named.conf

/etc/named.conf:24: missing ';' before end of file

[root@test named]# vi jacktest.com.zone #正向区域名称

$TTL 600 #宏要加$

jacktest.com. IN SOA ns1.jacktest.com. admin.jacktest.com. (

20161214

6H )

jacktest.com. IN NS ns1.jacktest.com.

IN MX 10 mail #域名可省，10为邮件等级

ns1 IN A 10.109.131.131

mail IN A 10.109.131.209

www IN A 10.109.131.209

ftp IN CNAME www

[root@test named]# chown root:named jacktest.com.zone

[root@test named]# ll

total 32

drwxrwx--- 2 named named 4096 Dec 13 14:57 data

drwxrwx--- 2 named named 4096 Dec 13 14:58 dynamic

-rw-r----- 1 root named 207 Dec 14 10:08 jacktest.com.zone

-rw-r----- 1 root named 1892 Feb 18 2008 named.ca

-rw-r----- 1 root named 152 Dec 15 2009 named.empty

-rw-r----- 1 root named 152 Jun 21 2007 named.localhost

-rw-r----- 1 root named 168 Dec 15 2009 named.loopback

drwxrwx--- 2 named named 4096 Dec 13 15:48 slaves

[root@test named]# vi jacktest.com.zone #正向区域名称

$TTL 600 #宏要加$

jacktest.com. IN SOA ns1.jacktest.com. admin.jacktest.com. (

20161214

6H )

jacktest.com. IN NS ns1.jacktest.com.

IN MX 10 mail #域名可省，10为邮件等级

ns1 IN A 10.109.131.131

mail IN A 10.109.131.209

www IN A 10.109.131.209

ftp IN CNAME www

四、语创建本地NS反向域

[root@test ~]# vi /etc/named.conf

... #新增以下部分

zone "1.168.192.in-addr.arpa" IN {

type master;

file "192.168.1.zone";

};

[root@test named]# cp -p jacktest.com.zone 192.168.1.zone #将正向复制为反向区域名称

[root@test named]# vi jacktest.com.zone #修改反向区域名称

$TTL 600 #宏要加$

@ IN SOA ns1.jacktest.com. admin.jacktest.com. (

20161214

6H )

IN NS ns1.jacktest.com. // 最后一项必须是完整的记录，句尾不可忘记写上" . "

3 IN PTR ns1.jacktest.com.

3 IN PTR www.jacktest.com.

4 IN PTR mail.jacktest.com.

5 IN PTR

dig -x 192.168.1.3

dig -x 192.168.1.4

dig +norecurse -t A www.163.com @192.168.1.3 #不递归查询

dig +trace -t A www.baidu.com @192.168.1.3 #递归显示查询结果

五、更改配制文件后即可限定查询段

[root@test etc]# vi named.conf

options {

directory "/var/named";

allow-recursion { 192.168.1.0/24; }; //只允许此IP段递归查询

};

zone "." IN {

type hint;

file "named.ca";

};

zone "localhost" IN {

type master;

file "named.localhost";

allow-transfer { none; }; //none不允许所有客户端发出传送请求

};

zone "0.0.127.in-addr.arpa" IN {

type master;

file "named.loopback";

allow-transfer { none; };

};

zone "jacktest.com" IN {

type master;

file "jacktest.com.zone";

allow-transfer { 192.168.1.5; }; //只允许此IP发出传送请求

};

zone "1.168.192.in-addr.arpa" IN {

type master;

file "192.168.1.zone";

allow-transfer { 192.168.1.5; };

};

[root@test etc]# tail /var/log/messages

Dec 15 14:11:41 test named[7276]: zone 1.168.192.in-addr.arpa/IN: loaded serial 2016121401

Dec 15 14:11:41 test named[7276]: zone jacktest.com/IN: loaded serial 20161214

Dec 15 14:11:41 test named[7276]: zone localhost/IN: loaded serial 0

Dec 15 14:11:41 test named[7276]: running

Dec 15 14:13:31 test named[7276]: client 192.168.1.5#58423: transfer of 'jacktest.com/IN': AXFR started

Dec 15 14:13:31 test named[7276]: client 192.168.1.5#58423: transfer of 'jacktest.com/IN': AXFR ended

六、设置从DNS服务器

[root@jacktest named]# setenforce 0

setenforce: SELinux is disabled

[root@jacktest named]# scp 192.168.1.3:/etc/named.conf /etc/

The authenticity of host '192.168.1.3 (192.168.1.3)' can't be established.

RSA key fingerprint is c2:f2:75:5c:ab:4a:43:d3:e1:76:bc:d2:0f:c7:d6:32.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '192.168.1.3' (RSA) to the list of known hosts.

root@192.168.1.3's password:

named.conf

[root@test etc]# vi /etc/named.conf

...

zone "jacktest.com" IN {

type slave;

file "slaves/jacktest.com.zone";

allow-transfer { 192.168.1.5; };

};

zone "1.168.192.in-addr.arpa" IN {

type slave;

file "slaves/192.168.1.zone";

allow-transfer { 192.168.1.5; };

};

验证：

[root@test slaves]# tail /var/log/messages #192.168.1.3主

Dec 15 15:43:35 test named[7595]: zone 1.168.192.in-addr.arpa/IN: loaded serial 2016121401

Dec 15 15:43:35 test named[7595]: zone jacktest.com/IN: loaded serial 20161214

Dec 15 15:43:35 test named[7595]: zone localhost/IN: loaded serial 0

Dec 15 15:43:35 test named[7595]: running

Dec 15 15:44:12 test named[7595]: client 192.168.1.5#47432: transfer of 'jacktest.com/IN': AXFR started

Dec 15 15:44:12 test named[7595]: client 192.168.1.5#47432: transfer of 'jacktest.com/IN': AXFR ended

Dec 15 17:25:29 test named[7595]: client 192.168.1.5#34268: transfer of 'jacktest.com/IN': AXFR started

Dec 15 17:25:29 test named[7595]: client 192.168.1.5#34268: transfer of 'jacktest.com/IN': AXFR ended

Dec 15 17:25:29 test named[7595]: client 192.168.1.5#59389: transfer of '1.168.192.in-addr.arpa/IN': AXFR started #传送开始

Dec 15 17:25:29 test named[7595]: client 192.168.1.5#59389: transfer of '1.168.192.in-addr.arpa/IN': AXFR ended #传送结果

[root@jacktest named]# tail /var/log/messages #192.168.1.5

Dec 15 17:28:13 jacktest named[10089]: zone localhost/IN: loaded serial 0

Dec 15 17:28:13 jacktest named[10089]: running

Dec 15 17:28:13 jacktest named[10089]: zone jacktest.com/IN: Transfer started.

Dec 15 17:28:13 jacktest named[10089]: transfer of 'jacktest.com/IN' from 192.168.1.3#53: connected using 192.168.1.5#34268

Dec 15 17:28:13 jacktest named[10089]: zone jacktest.com/IN: transferred serial 20161214

Dec 15 17:28:13 jacktest named[10089]: transfer of 'jacktest.com/IN' from 192.168.1.3#53: Transfer completed: 1 messages, 9 records, 233 bytes, 0.004 secs (58250 bytes/sec)

Dec 15 17:28:13 jacktest named[10089]: zone 1.168.192.in-addr.arpa/IN: Transfer started.

Dec 15 17:28:13 jacktest named[10089]: transfer of '1.168.192.in-addr.arpa/IN' from 192.168.1.3#53: connected using 192.168.1.5#59389

Dec 15 17:28:13 jacktest named[10089]: zone 1.168.192.in-addr.arpa/IN: transferred serial 2016121401

Dec 15 17:28:13 jacktest named[10089]: transfer of '1.168.192.in-addr.arpa/IN' from 192.168.1.3#53: Transfer completed: 1 messages, 7 records, 219 bytes, 0.002 secs (109500 bytes/sec)

七、测试NS自动更新到从服务器

[root@test named]# vi jacktest.com.zone #192.168.1.3主

$TTL 600

jacktest.com. IN SOA ns1.jacktest.com. admin.jacktest.com. (

2016121404 #3改成4

...

imap IN A 192.168.1.6

haha IN A 192.168.1.7 #新增一条记录

[root@test named]# service named reload

Reloading named: [ OK ]

[root@test named]# tail /var/log/messages #192.168.1.3主NS

Dec 16 10:05:53 test named[10112]: reloading configuration succeeded

Dec 16 10:05:53 test named[10112]: reloading zones succeeded

Dec 16 10:05:53 test named[10112]: zone jacktest.com/IN: loaded serial 2016121404

Dec 16 10:05:53 test named[10112]: zone jacktest.com/IN: sending notifies (serial 2016121404)

Dec 16 10:05:53 test named[10112]: client 192.168.1.5#50038: transfer of 'jacktest.com/IN': AXFR-style IXFR started

Dec 16 10:05:53 test named[10112]: client 192.168.1.5#50038: transfer of 'jacktest.com/IN': AXFR-style IXFR ended

[root@test named]# tail /var/log/messages #192.168.1.5从NS

Dec 16 10:08:38 jacktest named[12536]: client 192.168.1.3#6791: received notify for zone 'jacktest.com'

Dec 16 10:08:38 jacktest named[12536]: zone jacktest.com/IN: Transfer started.

Dec 16 10:08:38 jacktest named[12536]: transfer of 'jacktest.com/IN' from 192.168.1.3#53: connected using 192.168.1.5#50038

Dec 16 10:08:38 jacktest named[12536]: zone jacktest.com/IN: transferred serial 2016121404

Dec 16 10:08:38 jacktest named[12536]: transfer of 'jacktest.com/IN' from 192.168.1.3#53: Transfer completed: 1 messages, 13 records, 309 bytes, 0.002 secs (154500 bytes/sec)

Dec 16 10:08:38 jacktest named[12536]: zone jacktest.com/IN: sending notifies (serial 2016121404)

[root@jacktest slaves]# cat jacktest.com.zone #192.168.1.5从NS

jacktest.com IN SOA ns1.jacktest.com. admin.jacktest.com. (

2016121404 ; serial

...

ftp CNAME www

haha A 192.168.1.7 #自动学习成功

八、开放远程访问DC

Remote Name Daemon Control # [di:mn]守护进程

[root@test ~]# rndc-confgen > /etc/rndc.conf

[root@test ~]# cat /etc/rndc.conf

# Start of rndc.conf

key "rndc-key" {

algorithm hmac-md5;

secret "PElKGniJbHk/esQ9zpN+xg==";

};

options {

default-key "rndc-key";

default-server 127.0.0.1;

default-port 953;

};

# End of rndc.conf

# Use with the following in named.conf, adjusting the allow list as needed:

# key "rndc-key" {

# algorithm hmac-md5;

# secret "PElKGniJbHk/esQ9zpN+xg==";

# };

# controls {

# inet 127.0.0.1 port 953

# allow { 127.0.0.1; } keys { "rndc-key"; };

# };

# End of named.conf #绿色部分复制添加到named.conf

[root@test ~]# rndc -c /etc/rndc.conf status

rndc: connection to remote host closed

This may indicate that

* the remote server is using an older version of the command protocol,

* this host is not authorized to connect,

* the clocks are not synchronized, or

* the key is invalid.

[root@test ~]# rm /etc/rndc.key

rm: remove regular file `/etc/rndc.key'? y

[root@test ~]# rndc -c /etc/rndc.conf status

rndc: connection to remote host closed

This may indicate that

* the remote server is using an older version of the command protocol,

* this host is not authorized to connect,

* the clocks are not synchronized, or

* the key is invalid.

[root@test ~]# service named restart

Stopping named: . [ OK ]

Generating /etc/rndc.key: [ OK ]

Starting named: [ OK ]

[root@test ~]# rndc -c /etc/rndc.conf status

version: 9.7.0-P2-RedHat-9.7.0-21.P2.el5

CPUs found: 8

worker threads: 8

number of zones: 16

debug level: 0

xfers running: 0

xfers deferred: 0

soa queries in progress: 0

query logging is OFF

recursive clients: 0/0/1000

tcp clients: 0/100

server is up and running

[root@test ~]# rndc -c /etc/rndc.conf notify "jacktest.com"

zone notify queued

[root@test ~]# tail /var/log/messages

Dec 16 10:36:32 test named[10285]: received control channel command 'notify jacktest.com'

Dec 16 10:36:32 test named[10285]: zone jacktest.com/IN: sending notifies (serial 2016121404)

[root@test ~]# rndc -c /etc/rndc.conf flush

[root@test ~]# rndc -c /etc/rndc.conf stop

...

controls {

inet 192.168.1.3 port 953 #监听地址

allow { 192.168.1.5; } keys { "rndc-key"; }; #允许访问192.168.1.3的IP

};

[root@test ~]# scp /etc/rndc.conf 192.168.1.5:/root/

[root@jacktest ~]# vi /etc/rndc.conf #192.168.1.5从NS

# Start of rndc.conf

key "rndc-key" {

algorithm hmac-md5;

secret "PElKGniJbHk/esQ9zpN+xg==";

};

options {

default-key "rndc-key";

default-server 192.168.1.3;

default-port 953;

};

[root@jacktest ~]# rndc -c rndc.conf status #192.168.1.5从NS，已可远程访问

version: 9.7.0-P2-RedHat-9.7.0-21.P2.el5 #一般不开放远程允许访问，非常危险

CPUs found: 8

worker threads: 8

number of zones: 16

debug level: 0

xfers running: 0

xfers deferred: 0

soa queries in progress: 0

query logging is OFF

recursive clients: 0/0/1000

tcp clients: 0/100

server is up and running

[root@test ~]#

九、子域及子域转发（forward）

forward {only|first}

forwarders {};

zone "ZONE_NAME" IN {

type forward;

forward first;

forwarders {172.168.1.3};

};

新增子域服务器192.168.1.8

[root@test2 ~]# vi fin.jacktest.com.zone #192.168.1.8 子DNS

$TTL 600 ; 10 minutes

@ IN SOA ns1.fin.jacktest.com. admin.fin.jacktest.com. (

2016121701 ; serial

3600 ; refresh (1 hour)

300 ; retry (5 minutes)

172800 ; expire (2 days)

21600 ; minimum (6 hours)

)

NS ns1.fin.jacktest.com.

MX 10 mail.fin.jacktest.com.

ns1 A 192.168.1.8

mail A 192.168.1.9

www A 192.168.1.10

[root@test2 ~]# service named restart

Stopping named: . [ OK ]

Starting named: [ OK ]

验证子域

[root@test named]# dig -t A ns1.fin.jacktest.com @192.168.1.3 #通过主域可解析子域IP

; <<>> DiG 9.7.0-P2-RedHat-9.7.0-21.P2.el5 <<>> -t A ns1.fin.jacktest.com @192.168.1.3

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57664

;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:

;ns1.fin.jacktest.com. IN A

;; ANSWER SECTION:

ns1.fin.jacktest.com. 600 IN A 192.168.1.8

;; AUTHORITY SECTION:

fin.jacktest.com. 600 IN NS ns1.fin.jacktest.com.

;; Query time: 3 msec

;; SERVER: 192.168.1.3#53(192.168.1.3)

;; WHEN: Sat Dec 17 11:11:13 2016

;; MSG SIZE rcvd: 68

[root@test named]# dig -t A ns1.fin.jacktest.com @192.168.1.8 #通过子域可解析子域IP

; <<>> DiG 9.7.0-P2-RedHat-9.7.0-21.P2.el5 <<>> -t A ns1.fin.jacktest.com @192.168.1.8

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53646

;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:

;ns1.fin.jacktest.com. IN A

;; ANSWER SECTION:

ns1.fin.jacktest.com. 600 IN A 192.168.1.8

;; AUTHORITY SECTION:

fin.jacktest.com. 600 IN NS ns1.fin.jacktest.com.

;; Query time: 2 msec

;; SERVER: 192.168.1.8#53(192.168.1.8)

;; WHEN: Sat Dec 17 11:12:39 2016

;; MSG SIZE rcvd: 68

[root@test named]# nslookup

> server 192.168.1.3

Default server: 192.168.1.3

Address: 192.168.1.3#53

> set q=A

> www.jacktest.com

Server: 192.168.1.3 #通过服务器192.168.1.3查找

Address: 192.168.1.3#53

Name: www.jacktest.com #查找出两条记录
Address: 192.168.1.3
Name: www.jacktest.com
Address: 192.168.1.5

> set q=A

> www.fin.jacktest.com

Server: 192.168.1.3 #通过此服务器查找

Address: 192.168.1.3#53

Non-authoritative answer: #查找出一条记录，有为非官方记录
Name: www.fin.jacktest.com
Address: 192.168.1.10

> server 192.168.1.8

Default server: 192.168.1.8

Address: 192.168.1.8#53

> set q=A

> www.fin.jacktest.com

Server: 192.168.1.8 #通过服务器192.168.1.8查找

Address: 192.168.1.8#53

Name: www.fin.jacktest.com #查找出一条记录
Address: 192.168.1.10

> set q=A

> www.jacktest.com #通过子域服务器192.168.1.8查找父域的A记录

Server: 192.168.1.8

Address: 192.168.1.8#53

** server can't find www.jacktest.com.localdomain: SERVFAIL #子域无法查找父域的A记录

默认子域无法查找父域信息，定义转发即可告诉子域

[root@jacktest2 ~]# vi /etc/rndc.conf #192.168.1.8 子DNS 中新增以下部分

zone "jacktest.com" IN {

type forward;

forward first;

forwarders { 192.168.1.3; };

};

验证：

[root@test named]# nslookup

> set q=A

> www.jacktest.com

Server: 192.168.1.8 #通过服务器192.168.1.8查找

Address: 192.168.1.8#53

Non-authoritative answer:

Name: www.jacktest.com #新增forward后查找出两条记录
Address: 192.168.1.5
Name: www.jacktest.com
Address: 192.168.1.3

---end---

转载于:https://blog.51cto.com/wangfx/1883580

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