Instalacion y configuracion de Squid proxy en UBUNTU

  INSTALACIÓN:

Antes de nada en el terminal pondremos "sudo apt update" y "sudo apt upgrade" para actualizar el sistema.

después ponemos "sudo apt install squid3 -y", ahora ponemos los siguiente comandos "sudo cp /etc/squid/squid.conf /etc/squid/squid.conf.original" y tambien "sudo chmod a-w /etc/squid/squid.conf.original".

 

CONFIGURACIÓN: 

tendremos que editar un archivo, poniendo el comando "sudo gedit /etc/squid/squid.conf" en ese archivo pondremos lo siguiente:

 

#	WELCOME TO SQUID 3.5.27
#	----------------------------
#	
#	This is the documentation for the Squid configuration file.
#	This documentation can also be found online at:
#		http://www.squid-cache.org/Doc/config/
#	
#	You may wish to look at the Squid home page and wiki for the
#	FAQ and other documentation:
#		http://www.squid-cache.org/
#		http://wiki.squid-cache.org/SquidFaq
#		http://wiki.squid-cache.org/ConfigExamples
#

#Default:
# ACLs all, manager, localhost, and to_localhost are predefined.
#
#
# Recommended minimum configuration:
#

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
#acl localnet src 10.0.0.0/8	# RFC1918 possible internal network
#acl localnet src 172.16.0.0/12	# RFC1918 possible internal network
#acl localnet src 192.168.0.0/16	# RFC1918 possible internal network
#acl localnet src fc00::/7       # RFC 4193 local private network range
#acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines

acl ai1 src 192.168.32.0/24

acl SSL_ports port 443
acl Safe_ports port 80		# http
acl Safe_ports port 21		# ftp
acl Safe_ports port 443		# https
acl Safe_ports port 70		# gopher
acl Safe_ports port 210		# wais
acl Safe_ports port 1025-65535	# unregistered ports
acl Safe_ports port 280		# http-mgmt
acl Safe_ports port 488		# gss-http
acl Safe_ports port 591		# filemaker
acl Safe_ports port 777		# multiling http
acl CONNECT method CONNECT

#Default:
# Deny, unless rules exist in squid.conf.
#

#
# Recommended minimum Access Permission configuration:
#
# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# Only allow cachemgr access from localhost
http_access allow localhost manager
http_access deny manager

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
#http_access allow localnet
http_access allow localhost
http_access allow ai1

# And finally deny all other access to this proxy
http_access deny all

# Squid normally listens to port 3128
http_port 3128

 

 

Una vez configurado el archivo pondremos el siguiente comando "sudo service squid start"

y con el comando "sudo service squid status" vemos el estado del servicio

COMPROBACION: 

para comprobarlo desde otro equipo deberemos  ir al windows en otro ordenador y en configuracion del proxy del navegador pondremos nuestra ip

CONFIGURACION SQUID PROXY MODO TRANSPARENTE:

para empezar pondremos los siguiente comandos 

sudo cat /proc/sys/net/ipv4/ip_forward

sudo echo 1 > /proc/sys/net/ipv4/ip_forward 

sudo cat /etc/sysctl.conf 

sudo sysctl -w net.ipv4.ip_forward=1

sudo sysctl -a 

ahora ponemos

sudo gedit /etc/squid/squid.conf

dentro del archivo donde pone http_port 3128 le añadimos al final transparent 

 wlp2s0