##  esta configuracion para Squid debe de funcionar, cambiando el ip en la linea acl localhost src 172.16.0 a tu red local.

acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl to_localhost dst 127.0.0.0/8
acl localnet src 172.16.0.0/12	# RFC1918 possible internal network
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
http_access allow  localnet
http_access allow  localhost
http_access deny !Safe_ports
http_access deny to_localhost
http_access allow localnet
http_access deny all
icp_access allow localnet
icp_access deny all
htcp_access allow localnet
htcp_access deny all
http_port 3128 transparent
hierarchy_stoplist cgi-bin ?
access_log /usr/local/squid/logs/access.log squid
acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY
refresh_pattern ^ftp:		1440	20%	10080
refresh_pattern ^gopher:	1440	0%	1440
refresh_pattern .		0	20%	4320
icp_port 3130
dns_defnames on
coredump_dir /usr/local/squid/cache