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8/16/2019 Practica DNS
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PRACTICA 2: SISTEMA DE NOMBRE DE DOMINIO (DNS)
SERVIDOR PRINCIPAL (10.0.0.16)
CREATE NAMED CONTROL FILE (10.0.0.16)
#vi /var/named/chroot/etc/named.conf
CREATE NAME ZONE FILE (10.0.0.16)
#vi /var/named/chroot/var/named/named.dom4.com
CREATE IP ZONE FILE (10.0.0.16)
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#vi /var/named/chroot/var/named/named.10.0.0
CREATE LOCAL ZONE FILES (10.0.0.16)
#vi /var/named/chroot/var/named/localhost.zone
#vi /var/named/chroot/var/named/127.0.0.zone
COMPLEMENTAMOS (seguimos en 10.0.0.16)
#vi /etc/hosts
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127.0.0.1 localhost.localdomain localhost
10.0.0.16 sys16.dom4.com sys16
DAMOS EL FQDN DE FORMA TEMPORAL Y PERMANENTE:
#hostname sys16.dom4.com
#vi /etc/sysconfig/network
NETWORKING=yes
NETWORKING IPV6=yes
#HOSTNAME=localhost.localdomain
HOSTNAME=sys16.dom4.com
#vi /etc/resolv.conf
domain dom4.com
nameserver 10.0.0.16
#service named restart
VERIFICAR QUE SE INICIO CORRECTAMENTE (10.0.0.16)
#tail -50 /var/log/messages | grep named
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SERVIDOR SECUNDARIO (10.0.0.17)
CREATE NAMED CONTROL FILE (10.0.0.17)
#vi /var/named/chroot/etc/named.conf
CREATE LOCAL ZONE FILES (10.0.0.17)
#vi /var/named/chroot/var/named/localhost.zone
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#vi /var/named/chroot/var/named/127.0.0.zone
SEGUIMOS EN (10.0.0.17)
#vi /etc/hosts
127.0.0.1 localhost.localdomain localhost
10.0.0.17 sys17.dom4.com sys17
#hostname sys17.dom4.com
#vi /etc/sysconfig/network
NETWORKING=yes
NETWORKING IPV6=yes
#HOSTNAME=localhost.localdomain
HOSTNAME=sys17.dom4.com
#vi /etc/resolv.conf
domain dom4.com
nameserver 10.0.0.16
nameserver 10.0.0.17
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search dom4.com
VERFICAR QUE SE INICIO CORRECTAMENTE (10.0.0.17)
#service named restart
#tail -50 /var/log/messages | grep named
#chown –R named:named /var/named/chroot/var/named
#chmod g+w /var/named/chroot/var/named
#service named restart
COMPROBANDO QUE SE TRANSFIRIERON seguimos en (10.0.0.17)
#cd /var/named/chroot/var/named
#ls –l
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#cat named.dom4.com.bak
#cat named.10.0.0.bak
CLIENTE (10.0.0.13)
#vi /etc/hosts
127.0.0.1 localhost.localdomain localhost
10.0.0.13 sys13.dom4.com sys13
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#hostname sys13.dom4.com
#vi /etc/sysconfig/network
NETWORKING=yesNETWORKING IPV6=yes
#HOSTNAME=localhost.localdomain
HOSTNAME=sys13.dom4.com
#vi /etc/resolv.conf
domain dom4.com
nameserver 10.0.0.16
nameserver 10.0.0.17
TESTING (TANTO EN 10.0.0.16 - 10.0.0.17 - 10.0.0.13 )
VERFICAR CONECTIVIDAD CON NOMBRES NO IP’S
#ping sys16
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#ping sysX //donde X=17,13 (lo que definió en los archivos)
RESUELVA EL NOMBRE DEL HOST EN UN HOST EN EL DOMINIO
#host Y //donde Y=sys16, sys17, sys13
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#host localhost
#host 10.0.0.16 //tambien a 10.0.0.17 10.0.0.13
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EJECUTAR UNA CONSULTA INTERACTIVA DE LO SIGUIENTE: Nombre del servidor. Una IP
en el dominio.
#nslookup
>sys16
>10.0.0.X //(X=16,17,13)
>exit
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UTILICE dig PARA CONSULTAR PARA TODOS LOS SOA Y NS records EN NUESTRO
DOMINIO
#dig @sys16.dom4.com dom4.com soa
#dig @sys16.dom4.com dom4.com ns
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