Administracion de servicios en linux

SENDMAIL
Vi /etc/hosts (borrar duoc y agregar 10.20.24.35 nano.cl nano)
Vi /etc/sysconfig/network (editar hostname=nano.cl)
Hostname nano.cl (cerrar session)

Rpm –qa sendmail
Rpm –qa m4Rpm –qa dovecot
Rpm –qa sendmail-cf

Rpm - -import usr/share/doc/centos-release/RP……..
Export http_proxy=”http://10.20.1.15:8080”

Yum install dovecot
Yum install sendmail-cf

Cd/etc/mail
Cp sendmail.mc sendmail.mc.back
Vi sendmail.mc (buscar /127.0.0.1 o linea 105, cambiar en daemon 127.0.0.1 por 0.0.0.0)
M4 sendmail.mc > sendmail.cf
Service sendmail restartNetstat –lputn |Grep 25

Vi /etc/mail/access (insertar en ultima linea 10.20.24.35 RELAY)
Vi /etc/mail/local-host-names (insertar ip servidor)

telnet 10.20.24.35
ehlo 10.20.24.35
……
Helonano
Quit

Adduser –s /bin/true alum1
Passwd alum1
Vi /etc/shells (insertar ultima linea /bin/true)
Vi /etc/dovecot.conf (linea 14 descomentar protocols=IMAP POP3)(110 pop3,143 imap)Netstat –lpunt > sin_dovecot
Service dovecot restart
Netstat –lpunt < con_dovecot
Diff sin_dovecot con_dovecot

telnet 10.20.24.35 110

DNS
Vi /etc/hosts (borrar duoc e insertar10.20.24.35 nano.nana.cl nano)
Vi /etc/sysconfig/network (hostname= nano.nana.cl)
Hostname nano.nana.cl (cerrar session)

Vi /etec/sysconfig/network-scripts/ifcfg-eth0 (peerdns=no)
Vi/etc/resolv.conf

Rpm –qa bind
Rpm –qa caching-nameserver

*vi /etc/yum.repos.d/Centos-Base.repo (repositories en caso de error)

Yum install bind
Yum install caching-nameserver

Cd /etc/
Cpnamed.conf named.conf.back
Vi /etc/named.conf (zone localhost,copiar 5yy y luego p)(reverso copiar 0.0.0.127 arpa)

[pic]

Cd /var/named
Cp localhost.zone nano.nana.cl.zone
Vinano.nana.cl.zone (editar los @ por el dominio.)

[pic]

Service named restart
Service named reload

Monitorear servicios (abrir otra terminal):
Tail –f /var/log/messages
Nslookup –sil 10.20.24.35