Servidor DNS DHCP RHEL 5

Servidor DNS y servidor DHCP en RHEL 5 y Centos 5

Fuente: http://www.alcancelibre.org/staticpages/index.php/ejercicio-ddns-dhcp

yum -y install dhcp bind bind-chroot caching-nameserver vim-enhanced

# Intel Corporation 82801G (ICH7 Family) LAN Controller
DEVICE=eth0
BOOTPROTO=dhcp
HWADDR=00:13:D4:B7:9D:70
ONBOOT=yes
PEERDNS=no

# D-Link System Inc DGE-528T Gigabit Ethernet Adapter
DEVICE=eth1
BOOTPROTO=static
BROADCAST=192.168.0.255
HWADDR=5C:D9:98:9A:64:8A
IPADDR=192.168.0.1
NETMASK=255.255.255.0
NETWORK=192.168.0.0
ONBOOT=yes
PEERDNS=no

cd /var/named/chroot/var/named
mkdir dynamics
chmod 770 dynamics/
chown named.named dynamics/

touch /var/named/chroot/var/named/dynamics/red-local.net.zone
touch /var/named/chroot/var/named/dynamics/0.168.192.in-addr.arpa.zone

vim /var/named/chroot/var/named/dynamics/red-local.net.zone

$TTL    86400
@               IN      SOA     servidor.zapto.org.     root.zapto.org.  (
                20121226;  numero de serie
                28800   ;  tiempo de refresco
                7200    ;  tiempo entre reintentos
                604800  ;  expira si se deja de resolver
                86400   ;  tiempo total de vida
                )
@               IN      NS      servidor.zapto.org.
@               IN      A       192.168.0.1
servidor        IN      A       192.168.0.1
~ 

touch /var/named/chroot/var/named/dynamics/0.168.192.in-addr.arpa.zone

$TTL    86400
@               IN      SOA     servidor.zapto.org.     root.zapto.org.  (
                20121226;  numero de serie
                28800   ;  tiempo de refresco
                7200    ;  tiempo entre reintentos
                604800  ;  expira si se deja de resolver
                86400   ;  tiempo total de vida
                )
@               IN      NS      servidor.zapto.org.
1               IN      PTR     servidor.zapto.org.

chown named:named /var/named/chroot/var/named/dynamics/0.168.192.in-addr.arpa.zone
chown named:named /var/named/chroot/var/named/dynamics/red-local.net.zone
touch /var/named/chroot/etc/named.conf
vim /var/named/chroot/etc/named.conf

//
// Sample named.conf BIND DNS server 'named' configuration file
// for the Red Hat BIND distribution.
acl     "red-local" {
                     127.0.0.0/8;
                     192.168.0.0/24;
                     };

options {
        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-recursion { red-local; };
        allow-query { red-local; };
        forwarders { 8.8.8.8; 8.8.4.4; };
        forward first;

};

include "/etc/named.rfc1912.zones";
include "/etc/rndc.key";

zone "red-local.net" {
        type master;
        file "/var/named/dynamics/red-local.net.zone";
        allow-update { key "rndckey"; };
};
zone "0.168.192.in-addr.arpa" {
        type master;
        file "/var/named/dynamics/0.168.192.in-addr.arpa.zone";
        allow-update { key "rndckey"; };
};

Generar clave rndckey
/usr/sbin/dns-keygen clavesecreta
1488SCpaXu0MZlGW3w4v9WsjJW4JPsUkQG6KyfyqTIeASGLI3OkI2dsmx5Lr

Copiar y pegar la clave en /etc/rndc.key
key "rndckey" {
        algorithm       hmac-md5;
        secret          "key "rndckey" {
        algorithm       hmac-md5;
        secret          "1488SCpaXu0MZlGW3w4v9WsjJW4JPsUkQG6KyfyqTIeASGLI3OkI2dsmx5Lr";
};

service named start
chkconfig named on
vim /etc/resolv.conf

; generated manual dns bind
search servidor.zapto.org
nameserver 127.0.0.1

vim /etc/dhcpd.conf

#
# DHCP Server Configuration file.
#   see /usr/share/doc/dhcp*/dhcpd.conf.sample  
#
include "/var/named/chroot/etc/rndc.key";
server-identifier servidor.zapto.org;
ddns-update-style interim;
ddns-domainname "zapto.org.";
ddns-rev-domainname "in-addr.arpa.";
ignore client-updates;
authoritative;
default-lease-time 900;
max-lease-time 7200;
option domain-name "zapto.org";
option ip-forwarding off;

zone localdomain. {
        primary 127.0.0.1;
        key rndckey;
}
zone  0.168.192.in-addr.arpa. {
        primary 192.168.0.1;
        key rndckey;
}
zone red-local.net. {
        primary 192.168.0.1;
        key rndckey;
}

subnet 192.168.0.0 netmask 255.255.255.0 {
        option routers 192.168.0.1;
        option subnet-mask 255.255.255.0;
        option broadcast-address 192.168.0.255;
        option domain-name-servers 192.168.0.1;
        range 192.168.0.150 192.168.0.199;

}

service dhcpd start chkconfig dhcpd on
vim /etc/sysconfig/dhcpd

Linux es genial!