squid.conf

http_port 3128 transparent
visible_hostname Slackware.mundodacomputacao.com.br

cache_mem 64 MB
maximum_object_size 512 MB
minimum_object_size 0 KB
cache_swap_low 90
cache_swap_high 95
cache_dir ufs /var/spool/squid 2048 16 256
cache_access_log /var/log/squid/access.log
refresh_pattern ^ftp: 15 20% 2280
refresh_pattern ^gopher: 15 0% 2280
refresh_pattern . 15 20% 2280

acl manager proto cache_objet
acl localhost src 127.0.0.1
acl localnet src 192.168.1.103
acl SSL_ports port 443 563
acl Safe_ports port 80 #http
acl Safe_ports port 21 #ftp
acl Safe_ports port 443 563 #https,snews
acl Safe_ports port 70 #gopher
acl Safe_ports port 210 #wais
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 Safe_ports port 901 #swat
acl Safe_ports port 1025-65535 #portas altas
acl purge method PURGE
acl CONNECT method CONNECT

##ACLS
acl sitesbloqueados url_regex -i "/etc/squid/dominiosbloqueados"
acl palavrasproibidas url_regex -i "/etc/squid/palavrasproibidas"
acl sitespermitidos url_regex -i "/etc/squid/dominiospermitidos"
acl redelocal src 192.168.1.0/24

http_access allow manager localhost localnet
http_access deny manager
http_access allow purge localhost
http_access deny purge
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports

##Libera ou Bloqueia
http_access deny sitesbloqueados
http_access deny palavrasproibidas
http_access allow sitespermitidos
http_access allow localhost
http_access allow redelocal
http_access deny all
error_directory /usr/share/squid/errors/pt-br