centos7 Install BIND

Install BIND to configure DNS server which resolves domain name or IP address. BIND uses 53/TCP,UDP.
[1]	Install BIND.

[root@dlp ~]#  yum -y install bind bind-utils

[2]	Configure BIND This example is done with grobal IP address [172.16.0.80/29], Private IP address [10.0.0.0/24], Domain name [server.world]. However, Please use your own IPs and domain name when you set config on your server. ( Actually, [172.16.0.80/29] is for private IP address, though. )

[root@dlp ~]#  vi /etc/named.conf // // named.conf // // Provided by Red Hat bind package to configure the ISC BIND named(8) DNS // server as a caching only nameserver (as a localhost DNS resolver only). // // See /usr/share/doc/bind*/sample/ for example named configuration files. // options { # comment out ( listen all interfaces on the server ) #  listen-on port 53 { 127.0.0.1; }; # change ( if not use IPv6 ) listen-on-v6 {  none;  }; 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"; # query range ( set internal server and so on ) allow-query { localhost;  10.0.0.0/24;  }; # transfer range ( set it if you have secondary DNS ) allow-transfer { localhost; 10.0.0.0/24; }; 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; }; }; # change all from here view "internal" { match-clients { localhost; 10.0.0.0/24; }; zone "." IN { type hint; file "named.ca"; }; zone "server.world" IN { type master; file "server.world.lan"; allow-update { none; }; }; zone "0.0.10.in-addr.arpa" IN { type master; file "0.0.10.db"; allow-update { none; }; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; }; view "external" { match-clients { any; }; allow-query { any; }; recursion no; zone "server.world" IN { type master; file "server.world.wan"; allow-update { none; }; }; zone "80.0.16.172.in-addr.arpa" IN { type master; file "80.0.16.172.db"; allow-update { none; }; }; }; # allow-query  ⇒ query range you permit # allow-transfer  ⇒ the range you permit to transfer zone info # recursion  ⇒ allow or not to search recursively # view "internal" { *** };  ⇒ write for internal definition # view "external" { *** }; ⇒ write for external definition # For How to write for reverse resolving, Write network address reversely like below. # 10.0.0.0/24 # network address ⇒ 10.0.0.0 # range of network ⇒ 10.0.0.0 - 10.0.0.255 # how to write ⇒ 0.0.10.in-addr.arpa # 172.16.0.80/29 # network address ⇒ 172.16.0.80 # range of network ⇒ 172.16.0.80 - 172.16.0.87 # how to write ⇒ 80.0.16.172.in-addr.arpa