Linux Nineth Week Lesson notes (2) high-speed DNS

settings for high-speed DNS

1. Deployment of the environment

Turn on two virtual machines, one as a client and the other as a server

# server-side

Yuminstall bind-y # installation software

Systemctl status named# View status

systemctl start named # Turn on the named service, which is off by default

Small Details: When starting this service will be card, this time you need to randomly move the mouse, and tapping the keyboard, this function is to randomly grab your action, to generate the key. Execute:cat/etc/rndc.key This command to view the build process.

Systemctl Enable Named.service # turn on auto start

firewall-cmd--permanent--add-service=dns # # Add a Firewall service that does not affect the process

Firewall-cmd--reload

Firewall-cmd--list-all # list firewall allow process

650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M00/8A/FB/wKiom1hAD8jDW2xgAAHCLAui850504.png-wh_500x0-wm_3 -wmp_4-s_2389375143.png "title=" image 1.png "alt=" Wkiom1had8jdw2xgaahclaui850504.png-wh_50 "/>

vim/etc/named.conf #named master configuration file

To edit a configuration file:

Systemctl Restart named

Options {

listen-on Port: (any;}; # for all interface open the port

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;}; # # Answer all the questions

forwarders {172.25.254.250;}; # # Ask an IP that can connect with the outside world . I don't know, who am I to ask.

dnssec-validation No; # #yes change to no

650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M00/8A/F7/wKioL1hAD-CA3lkJAAIBxp1W3jI164.png-wh_500x0-wm_3 -wmp_4-s_1820923952.png "title=" image 2.png "alt=" wkiol1had-ca3lkjaaibxp1w3ji164.png-wh_50 "/>

650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M01/8A/FB/wKiom1hAD_PT0-AvAAGMktWJ1uA576.png-wh_500x0-wm_3 -wmp_4-s_548405691.png "title=" image 3.png "alt=" wkiom1had_pt0-avaagmktwj1ua576.png-wh_50 "/>

systemctl Restart named # # Restart service

# # Client

Vim/etc/resolv.conf

650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M01/8A/F7/wKioL1hAEAiSjcy3AAC9y56154w688.png-wh_500x0-wm_3 -wmp_4-s_902839678.png "title=" image 4.png "alt=" wkiol1haeaisjcy3aac9y56154w688.png-wh_50 "/>

Test:

Execute command on client:dig www.baidu,com

650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M00/8A/FB/wKiom1hAEJ3x9TTHAAIAztfN_ME168.png-wh_500x0-wm_3 -wmp_4-s_2283086626.png "title=" 2016-11-25 13_26_37 screenshot. png "alt=" wkiom1haej3x9tthaaiaztfn_me168.png-wh_50 "/>

####### forward parsing, resolving the domain name to IP

Vim/etc/name.conf

# # Delete forwarders {172.25.254.250;};

Vim/etc/named.rfc1912.zones

Edit:

Zone "Localhost.localdomain" in {

Type master;

File "Named.localhost";

allow-update {none;};

};

Zone "localhost" in {

Type master;

File "Named.localhost";

allow-update {none;};

};

Zone "Westos.com" in {

Type master;

File "Westos.com.zone";

};

650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M01/8A/F7/wKioL1hAEMGz0A3QAAFNj0O6zhE831.png-wh_500x0-wm_3 -wmp_4-s_326249417.png "title=" 2016-11-25 13_55_50 screenshot. png "alt=" wkiol1haemgz0a3qaafnj0o6zhe831.png-wh_50 "/>

# Small Details: After the end of the file can see the next need to manipulate the file

650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M00/8A/F7/wKioL1hAENjiB2CbAAE6_pdSHrk021.png-wh_500x0-wm_3 -wmp_4-s_2795772096.png "title=" 2016-11-25 13_53_46 screenshot. png "alt=" wkiol1haenjib2cbaae6_pdshrk021.png-wh_50 "/>  

Then:cd/var/named/

Cp-p named.localhost Westos.com.zone # # with permission copy

Editing a configuration file

Vim Westos.com.zone

650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M02/8A/FB/wKiom1hAEP2AxBnTAADn5K2--fE948.png-wh_500x0-wm_3 -wmp_4-s_3410390711.png "title=" 2016-11-25 14_14_01 screenshot. png "alt=" wkiom1haep2axbntaadn5k2--fe948.png-wh_50 "/>

Description: In dns.westos.com. ( at the back of this "." must add, here's the "." represents the previous configuration file written. westos.com)

Systemctl Restart named # # Restart service

Test

On the client

Dig www.qq,com

650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M00/8A/FB/wKiom1hAEUGhhrl-AAHEa-wzrCw731.png-wh_500x0-wm_3 -wmp_4-s_1506512614.png "title=" 2016-11-25 14_07_28 screenshot. png "alt=" wkiom1haeughhrl-aahea-wzrcw731.png-wh_50 "/> 650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M01/8A/F7/wKioL1hAEZfCH1Q4AAGvulkiLmc986.png-wh_500x0-wm_3 -wmp_4-s_816504484.png "title=" 2016-11-25 14_07_35 screenshot. png "alt=" wkiol1haezfch1q4aagvulkilmc986.png-wh_50 "/>

##### Reverse parsing # # # #

Vim/etc/named.rfc1912.zones

Zone "254.25.172.in-addr.arpa" in {

Type master;

File "Westos.comnanr";

allow-update {none;};

};

650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M00/8A/F7/wKioL1hAEfXjbOOTAAFJk-j-0qY214.png-wh_500x0-wm_3 -wmp_4-s_701743505.png "title=" 2016-11-25 14_37_46 screenshot. png "alt=" wkiol1haefxjbootaafjk-j-0qy214.png-wh_50 "/>

cd/var/named/

Cp-p Named.loopback Westos.com.ptr

Vim Westos.com.ptr

650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M00/8A/F7/wKioL1hAEk-j_gXGAADZvjhgIWw587.png-wh_500x0-wm_3 -wmp_4-s_4099037087.png "title=" 2016-11-25 14_41_03 screenshot. png "alt=" wkiol1haek-j_gxgaadzvjhgiww587.png-wh_50 "/>

Test:

On the server side

650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M02/8A/FB/wKiom1hAEnmxdGUiAAHYHl2xpCQ327.png-wh_500x0-wm_3 -wmp_4-s_4069040625.png "style=" Float:none; "title=" 2016-11-25 14_41_55 screenshot. png "alt=" Wkiom1haenmxdguiaahyhl2xpcq327.png-wh_50 "/>

650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M02/8A/FB/wKiom1hAEnrDMQolAAHcFyc_pkA319.png-wh_500x0-wm_3 -wmp_4-s_959290540.png "style=" Float:none; "title=" 2016-11-25 14_41_59 screenshot. png "alt=" wkiom1haenrdmqolaahcfyc_ Pka319.png-wh_50 "/>

Linux Nineth Week Lesson notes (2) high-speed DNS