Diferencia entre revisiones de «DNS Master en paloma»
| Línea 16: | Línea 16: | ||
//acl redesNegadas define las redes a denegar consultas al servidor DNS | //acl redesNegadas define las redes a denegar consultas al servidor DNS | ||
acl redesNegadas { 0.0.0.0/8; 1.0.0.0/8; 2.0.0.0/8; 192.0.2.0/24; 224.0.0.0/3; 172.16.0.0/12; 10.0.0.0/8; 192.168.0.0/24; 169.254.0.0/16; 192.168.1.0/24; 192.168.2.0/24; 192.168.3.0/24; }; | acl redesNegadas { 0.0.0.0/8; 1.0.0.0/8; 2.0.0.0/8; 192.0.2.0/24; 224.0.0.0/3; 172.16.0.0/12; 10.0.0.0/8; 192.168.0.0/24; 169.254.0.0/16; 192.168.1.0/24; 192.168.2.0/24; 192.168.3.0/24; }; | ||
| − | |||
options { | options { | ||
//desactivamos la cache | //desactivamos la cache | ||
acache-enable no; | acache-enable no; | ||
directory "/var/cache/bind"; | directory "/var/cache/bind"; | ||
| − | |||
//No es necesario forwardear | //No es necesario forwardear | ||
//forwarders { | //forwarders { | ||
| Línea 27: | Línea 25: | ||
// 164.73.128.70; | // 164.73.128.70; | ||
// }; | // }; | ||
| − | |||
//No permitimos las consultas salvo las de nuestra zona | //No permitimos las consultas salvo las de nuestra zona | ||
allow-query { none; }; | allow-query { none; }; | ||
| − | |||
//No permitimos las recusion | //No permitimos las recusion | ||
allow-recursion { none; }; | allow-recursion { none; }; | ||
| − | |||
//Incluimos las redes de la acl redesNegadas a la lista negra | //Incluimos las redes de la acl redesNegadas a la lista negra | ||
blackhole { redesNegadas; }; | blackhole { redesNegadas; }; | ||
| − | |||
auth-nxdomain no; # conform to RFC1035 | auth-nxdomain no; # conform to RFC1035 | ||
listen-on-v6 { any; }; | listen-on-v6 { any; }; | ||
| − | |||
| − | |||
// If there is a firewall between you and nameservers you want | // If there is a firewall between you and nameservers you want | ||
// to talk to, you may need to fix the firewall to allow multiple | // to talk to, you may need to fix the firewall to allow multiple | ||
// ports to talk. See http://www.kb.cert.org/vuls/id/800113 | // ports to talk. See http://www.kb.cert.org/vuls/id/800113 | ||
| − | |||
// If your ISP provided one or more IP addresses for stable | // If your ISP provided one or more IP addresses for stable | ||
// nameservers, you probably want to use them as forwarders. | // nameservers, you probably want to use them as forwarders. | ||
// Uncomment the following block, and insert the addresses replacing | // Uncomment the following block, and insert the addresses replacing | ||
// the all-0's placeholder. | // the all-0's placeholder. | ||
| − | |||
}; | }; | ||
Revisión del 23:54 7 jun 2011
Instalación de un servisor DNS Master en paloma:
Instalación
# sudo apt-get install bind9 bind9-doc dnsutils
Configuración
Los archivos de configuracion del Bind estan en /etc/bind/
# sudo vi /etc/bind/named.conf.options
root@paloma:~# cat /etc/bind/named.conf.options
//acl redesNegadas define las redes a denegar consultas al servidor DNS
acl redesNegadas { 0.0.0.0/8; 1.0.0.0/8; 2.0.0.0/8; 192.0.2.0/24; 224.0.0.0/3; 172.16.0.0/12; 10.0.0.0/8; 192.168.0.0/24; 169.254.0.0/16; 192.168.1.0/24; 192.168.2.0/24; 192.168.3.0/24; };
options {
//desactivamos la cache
acache-enable no;
directory "/var/cache/bind";
//No es necesario forwardear
//forwarders {
// 164.73.128.5;
// 164.73.128.70;
// };
//No permitimos las consultas salvo las de nuestra zona
allow-query { none; };
//No permitimos las recusion
allow-recursion { none; };
//Incluimos las redes de la acl redesNegadas a la lista negra
blackhole { redesNegadas; };
auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
// If there is a firewall between you and nameservers you want
// to talk to, you may need to fix the firewall to allow multiple
// ports to talk. See http://www.kb.cert.org/vuls/id/800113
// If your ISP provided one or more IP addresses for stable
// nameservers, you probably want to use them as forwarders.
// Uncomment the following block, and insert the addresses replacing
// the all-0's placeholder.
};
- sudo vi/etc/bind/named.conf.local
Editamos este archivo para definir las zonas directas e inversas de nuestro dominio, y los archivos donde estaran las configuraciones de las mismas.
root@paloma:~# cat /etc/bind/named.conf.local // // Do any local configuration here //
//Definimos nuestra zona de dominio taller.csic.edu.uy //Nuestro dns solo va a contestar por esta zona zone "taller.csic.edu.uy"{ type master; file "/etc/bind/db.taller.csic.edu.uy"; allow-query { any;}; }; zone "234.73.164.in-addr.arpa"{ type master; file "/etc/bind/db.164.73.234"; allow-query { any;}; }; //include "/etc/bind/zones.rfc1918";
Creamos db.taller.csic.edu.uy copiando /etc/bind/db.local como /etc/bind/db.taller.csic.edu.uy
root@paloma:~# cat /etc/bind/db.taller.csic.edu.uy
- BIND data file for local loopback interface
$TTL 604800 @ IN SOA taller.csic.edu.uy. root.dns. ( 2011060201 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL
@ IN NS taller.csic.edu.uy. @ IN A 164.73.234.104 paloma IN A 164.73.234.104 pedrera IN A 164.73.234.102 polonio IN A 164.73.234.103 garzon IN A 164.73.234.126 base-de-datos IN CNAME paloma tikiwiki IN CNAME paloma
Creamos db.164.73.234 copiando db.127
root@paloma:~# cat /etc/bind/db.164.73.234
- BIND reverse data file for local loopback interface
$TTL 604800 @ IN SOA taller.csic.edu.uy. root.dns. ( 1 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL
@ IN NS taller.csic.edu.uy. @ IN PTR taller.csic.edu.uy. 102 IN PTR pedrera.taller.csic.edu.uy. 103 IN PTR polonio.taller.csic.edu.uy. 104 IN PTR paloma.taller.csic.edu.uy. 126 IN PTR garzon.taller.csic.edu.uy.
Referencias: http://linuxsilo.net/articles/bind.html http://www.javcasta.com/2011/05/09/ubuntu-servidor-dns-cache-para-una-red-local-lan-stub-con-bind9/ Insertar aquí texto sin formato