Re: aiuto per proxy trasparente con squid
Dario Pilori ha scritto:
> 2009/1/4 Roberto Macchetta <roby.programmer@fastwebnet.it>:
>
>> [cut
>> Cambia queste due regole nella regola:
>> iptables -t nat -A PREROUTING -i $LAN_IN -p tcp --dport 80 -j REDIRECT
>> --to-port $SQUID_PORT
>>
>> E aggiungi la regola
>> iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
>>
ciao
ho modificato lo script cosi' come mi hai indicato :
#!/bin/sh
# squid server IP
SQUID_SERVER="192.168.0.1"
# Interface connected to Internet
INTERNET="eth0"
# Interface connected to LAN
LAN_IN="eth1"
# Squid port
SQUID_PORT="3128"
# DO NOT MODIFY BELOW
# Clean old firewall
iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
# Load IPTABLES modules for NAT and IP conntrack support
modprobe ip_conntrack
modprobe ip_conntrack_ftp
# For win xp ftp client
#modprobe ip_nat_ftp
echo 1 > /proc/sys/net/ipv4/ip_forward
# Setting default filter policy
iptables -P INPUT DROP
iptables -P OUTPUT ACCEPT
# Unlimited access to loop back
iptables -A INPUT -i lo -j ACCEPT
iptables -A OUTPUT -o lo -j ACCEPT
# Allow UDP, DNS and Passive FTP
iptables -A INPUT -i $INTERNET -m state --state ESTABLISHED,RELATED -j
ACCEPT
# set this system as a router for Rest of LAN
iptables --table nat --append POSTROUTING --out-interface $INTERNET -j
MASQUERADE
iptables --append FORWARD --in-interface $LAN_IN -j ACCEPT
# unlimited access to LAN
iptables -A INPUT -i $LAN_IN -j ACCEPT
iptables -A OUTPUT -o $LAN_IN -j ACCEPT
# DNAT port 80 request comming from LAN systems to squid 3128
#($SQUID_PORT) aka transparent proxy
#iptables -t nat -A PREROUTING -i $LAN_IN -p tcp --dport 80 -j DNAT --to
$SQUID_SERVER:$SQUID_PORT
# if it is same system
#iptables -t nat -A PREROUTING -i $INTERNET -p tcp --dport 80 -j
REDIRECT --to-port $SQUID_PORT
# presa dal ng
#iptables -t nat -A POSTROUTING -o $INTERNET -j MASQUERADE
iptables -t nat -A PREROUTING -i $LAN_IN -p tcp --dport 80 -j REDIRECT
--to-port $SQUID_PORT
iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
# DROP everything and Log it
iptables -A INPUT -j LOG
iptables -A INPUT -j DROP
ho eseguito lo script e poi ho provato sul portatile a connettermi, ma
non funziona ancora, e' come prima, devo sempre impostare il proxy a
mano, vi serve che posti qualche file di configurazione (output di
iptables o quant'altro)?
non capisco perche' non va...
--
Nobuteru
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