Crear Usuario[root@dlp ~]# useradd cent[root@dlp ~]# passwd centDetener Servicios Iptables[root@dlp ~]# /etc/rc.d/init.d/iptables stopiptables: Flushing firewall rules: [ OK ]iptables: Setting chains to policy ACCEPT: filter [ OK ]iptables: Unloading iptables modules: [ OK ][root@dlp ~]# chkconfig iptables offActualizacion del Sistema[root@dlp ~]# yum -y install yum-plugin-fastestmirror [root@dlp ~]# yum -y updateAgregar Repositorios[root@dlp ~]# yum -y install yum-plugin-priorities[root@dlp ~]# sed -i -e "s/\]$/\]\npriority=1/g" /etc/yum.repos.d/CentOS-Base.repo Repositorios EPEL[root@dlp ~]# yum -y install epel-release[root@dlp ~]# sed -i -e "s/\]$/\]\npriority=5/g" /etc/yum.repos.d/epel.repo[root@dlp ~]# sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/epel.repo[root@dlp ~]# yum --enablerepo=epel install [Package]Repositorios RPMFORGE[root@dlp ~]# yum -y install http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm[root@dlp ~]# sed -i -e "s/\]$/\]\npriority=10/g" /etc/yum.repos.d/rpmforge.repo[root@dlp ~]# sed -i -e "s/enabled = 1/enabled = 0/g" /etc/yum.repos.d/rpmforge.repo[root@dlp ~]# yum --enablerepo=rpmforge install [Package]Instalacin de un DNS[root@dlp ~]# yum -y install bind bind-utils [root@dlp ~]# vi /etc/named.confoptions {

# 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; 192.168.0.0/24;};# transfer range ( set it if you have secondary DNS )allow-transfer { localhost; 192.168.0.0/24; };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";

};

logging { channel default_debug { file "data/named.run"; severity dynamic; };};

# change all from hereview "internal" { match-clients { localhost; 192.168.0.0/24; }; zone "." IN { type hint; file "named.ca"; }; zone "server.world" IN { type master; file "server.dominio.lan"; allow-update { none; }; }; zone "0.0.10.in-addr.arpa" IN { type master; file "0.168.192.db"; allow-update { none; }; };include "/etc/named.rfc1912.zones";include "/etc/named.root.key";};view "external" {## IP EXTERNA 172.16.0.80 --> 80.0.16.172 match-clients { any; }; allow-query { any; }; recursion no; zone "server.world" IN { type master; file "server.dominio.wan"; allow-update { none; }; }; zone "80.0.16.172.in-addr.arpa" IN { type master; file "80.0.16.172.db"; allow-update { none; }; };};Zona Interna[root@dlp ~]# vi /var/named/server.world.lan $TTL 86400@ IN SOA dlp.dominio.local. root.dominio.local. ( 2014080201 ;Serial 3600 ;Refresh 1800 ;Retry 604800 ;Expire 86400 ;Minimum TTL)# define name serve IN NS localhost.dominio.local.# internal IP address of name server IN A 192.168.0.5# define Mail exchanger IN MX 10 localhost.server.world.# define IP address and hostnamedlp IN A 10.0.0.30