squid - bloquear todos sites, exceto alguns

rlasmar
(usa CentOS)

Enviado em 29/10/2011 - 20:57h

Fala pessoal, sou novo no mundo linux.

Tenho que fazer o seguinte bloqueio/permissão no squid.

1.Escutar apenas na interface eth1
2.Não permitir acesso a sites .globo.com e com palavra sexo
3.Permitir acesso a sites .gov.br e .google.com
4.Permita acesso a todos os sites (exceto os descritos na regra 2) para o IP 10.0.0.2
5.Tenha como politica negar todos os sites.

Estou usando CentOS com squid 3.1.4

Meu arquivo de configuracao está da seguinta maneira:

================================================
#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl localhost src ::1/128
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32
acl to_localhost dst ::1/128

# 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 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
acl globo dstdomain .globo.com
acl permite dstdomain .gov.br .google.com
acl diretoria src 10.0.0.2/32
acl sexo url_regex -i sexo

#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager

# 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

# 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
#

http_access deny sexo
http_access deny globo
http_access allow permite
http_access allow diretoria
http_access deny all

# 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
# 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

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

# Squid normally listens to port 3128
http_port 10.0.0.1:3128

# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?

# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/spool/squid 100 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid

# Add any of your own refresh_pattern entries above these.
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320

visible_hostname rlasmar
============================================

O problema que tá acontecendo é que ele tá bloqueando tudo, mas se eu tiro o "deny all" que coloquei depois da diretoria, ele segue as regras, bloqueando apenas globo.com e a palavra sexo, porém, libera todos os outros sites.
Já tentei declarar acl all 0.0.0.0/32, mas ele diz que é reduntante e ignora, tanto que quando digito all fica de outra cor, acredito que a acl all já seja padrão, desculpe a ignorância, mas estou comecando agora.