leandrogois
(usa Ubuntu)
Enviado em 01/03/2010 - 14:25h
sim uso proxy transparente, segue squid.conf e regras de firewall
acl all src all
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 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 SSL_ports port 443 # https
acl SSL_ports port 563 # snews
acl SSL_ports port 873 # rsync
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 Safe_ports port 631 # cups
acl Safe_ports port 873 # rsync
acl Safe_ports port 901 # SWAT
acl purge method PURGE
acl CONNECT method CONNECT
acl acesso_total src "/etc/squid/acesso_total"
acl acesso_restrito src "/etc/squid/acesso_restrito"
acl liberado url_regex -i "/etc/squid/liberado"
acl download url_regex -i "/etc/squid/download"
acl bloqueado url_regex -i "/etc/squid/bloqueado"
http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost
http_access allow acesso_total
http_access allow liberado
http_access deny download
http_access deny bloqueado
http_access allow acesso_restrito
http_access deny all
icp_access allow localnet
icp_access deny all
http_port 3128 transparent
hierarchy_stoplist cgi-bin ?
access_log /var/log/squid/access.log squid
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern (Release|Package(.gz)*)$ 0 20% 2880
refresh_pattern . 0 20% 4320
acl shoutcast rep_header X-HTTP09-First-Line ^ICY\s[0-9]
upgrade_http0.9 deny shoutcast
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
extension_methods REPORT MERGE MKACTIVITY CHECKOUT
error_directory /usr/share/squid/errors/Portuguese
hosts_file /etc/hosts
coredump_dir /var/spool/squid
regras de firewall
#!/bin/bash
# Limpando tabelas
iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
# Compartilhando a web na rede interna
iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o eth0 -j MASQUERADE
echo 1 > /proc/sys/net/ipv4/ip_forward
# Bloqueando Traceroute
iptables -A INPUT -p udp -s 0/0 -i eth0 --dport 33435:33525 -j DROP
# Proteção contra ataques
iptables -A INPUT -m state --state INVALID -j DROP
# Redireciona dados da porta 80 para a porta 3128
iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j REDIRECT --to-port 3128
# Termina
echo "IPTABLES PRONTO"
