OpenVPN Debian (RoadWarriors)
OpenVPN Debian (RoadWarriors)
El objetivo es que los usuarios se puedan conectar con la oficina cuando están fuera de ella de forma segura y puedan hacer uso de todos los recursos en forma similar a cuando están en la misma.Instalación de OpenVPN paso a paso para soportar roadwarriors en Linux (Debian, similar para otras distribuciones) y Windows. Basado en este post http://routerman.blogsome.com/2007/08/30/roadwarrior-en-openvpn-debian-etch/ , pero actualizado en algunos detalles. La parte del servidor Linux
- Instalar el openvpn y sus dependencias: apt-get install openvpn
- Copiar a /etc/openvpn algunos scripts que utilizaremos enseguida: cp -a /usr/share/doc/openvpn/examples/easy-rsa /etc/openvpn
- Ir a la carpeta /etc/openvpn/easy-rsa/2.0
- Editar el archivo vars del anterior directorio y modificar los siguientes campos acorde a tus datos :
# Don't leave any of these fields blank. export KEY_COUNTRY="PA" export KEY_PROVINCE="PA" export KEY_CITY="Panama" export KEY_ORG="Panama" export KEY_EMAIL="me@myhost.mydomain"
- ejecutar: . vars (hay un punto adelante de vars)
- ejecutar: ./clean-all (para eliminar cualquier cosa anterior)
- ejecutar: ./build-ca
/etc/openvpn/easy-rsa/2.0/keys# ls ca.crt ca.key index.txt serial
- ejecutar: ./build-key-server servidor (desde /etc/openvpn/easy-rsa/2.0 )
- ejectutar: ./build-dh
- Esto produce algunos archivos adicionales:
/etc/openvpn/easy-rsa/2.0/keys# ls
- Contenido del archivo server.conf que va en /etc/openvpn:
- *******************************************************************************
- ********************************************************************************
- editar /etc/default/openvpn : poner AUTOSTART="server" (para que cargue la configuración server.conf que hicimos anteriormente al iniciar)
- Generar las llaves de cada cliente (en nuestro caso edgardo) desde /etc/openvpn/easy-rsa/2.0
- ./build-key edgardo
- Esto genera los archivos adicionales:
edgardo.crt edgardo.csr edgardo.key
- Copiar los archivos generados anteriormente (en el servidor) al directorio /etc/openvpn del cliente:
- Contenido del archivo cliente.conf que va en /etc/openvpn:
- *****************************************************************************
- ***********************************************************************************
- editar /etc/default/openvpn : poner AUTOSTART="cliente" (para que cargue la configuración cliente.conf que hicimos anteriormente al iniciar)
- Esto sería todo para el cliente Linux, reiniciar el openvpn en ambas máquinas y listo (/etc/init.d/openvpn restart)
- Además del siguiente archivo de configuración edgardo.ovpn (es simple texto)
- *************************************************************************************
# Sample client-side OpenVPN 2.0 config file #
# for connecting to multi-client server. #
# #
# This configuration can be used by multiple #
# clients, however each client should have #
# its own cert and key files. #
# #
# On Windows, you might want to rename this #
# file so it has a .ovpn extension #
##############################################
# Specify that we are a client and that we
# will be pulling certain config file directives
# from the server.
client
# Use the same setting as you are using on
# the server.
# On most systems, the VPN will not function
# unless you partially or fully disable
# the firewall for the TUN/TAP interface.
;dev tap
dev tun
# Windows needs the TAP-Win32 adapter name
# from the Network Connections panel
# if you have more than one. On XP SP2,
# you may need to disable the firewall
# for the TAP adapter.
;dev-node MyTap
# Are we connecting to a TCP or
# UDP server? Use the same setting as
# on the server.
;proto tcp
proto udp
# The hostname/IP and port of the server.
# You can have multiple remote entries
# to load balance between the servers.
remote url_o_ip_del_servidor.com 5000 ############ojo esta es la línea importante
;remote my-server-2 1194
# Choose a random host from the remote
# list for load-balancing. Otherwise
# try hosts in the order specified.
;remote-random
# Keep trying indefinitely to resolve the
# host name of the OpenVPN server. Very useful
# on machines which are not permanently connected
# to the internet such as laptops.
resolv-retry infinite
# Most clients don't need to bind to
# a specific local port number.
nobind
# Downgrade privileges after initialization (non-Windows only)
;user nobody
;group nobody
# Try to preserve some state across restarts.
persist-key
persist-tun
# If you are connecting through an
# HTTP proxy to reach the actual OpenVPN
# server, put the proxy server/IP and
# port number here. See the man page
# if your proxy server requires
# authentication.
;http-proxy-retry # retry on connection failures
;http-proxy [proxy server] [proxy port #]
# Wireless networks often produce a lot
# of duplicate packets. Set this flag
# to silence duplicate packet warnings.
;mute-replay-warnings
# SSL/TLS parms.
# See the server config file for more
# description. It's best to use
# a separate .crt/.key file pair
# for each client. A single ca
# file can be used for all clients.
ca ca.crt ############ojo esta es la línea importante
cert edgardo.crt ############ojo esta es la línea importante
key edgardo.key ############ojo esta es la línea importante
# Verify server certificate by checking
# that the certicate has the nsCertType
# field set to "server". This is an
# important precaution to protect against
# a potential attack discussed here:
# http://openvpn.net/howto.html#mitm
#
# To use this feature, you will need to generate
# your server certificates with the nsCertType
# field set to "server". The build-key-server
# script in the easy-rsa folder will do this.
ns-cert-type server
# If a tls-auth key is used on the server
# then every client must also have the key.
;tls-auth ta.key 1
# Select a cryptographic cipher.
# If the cipher option is used on the server
# then you must also specify it here.
;cipher x
# Enable compression on the VPN link.
# Don't enable this unless it is also
# enabled in the server config file.
comp-lzo
# Set log file verbosity.
verb 3
# Silence repeating messages
;mute 20
***************************************************************************
Opcionalmente se puede poner el OpenVPN GUI para iniciarse automáticamente copiando el acceso directo al menú de inicio.