View source for Script NAT Transparant Proxy & Squid

 #!/bin/sh
 # squid server IP
 SQUID_SERVER="192.168.1.1"
 # 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
 # DROP everything and Log it
 iptables -A INPUT -j LOG
 iptables -A INPUT -j DROP


==Referensi==

* http://wa2n.staff.uns.ac.id/2009/03/04/transparant-proxy-blok-url-blok-keyword-with-squid-on-ubuntu/

==Pranala Menarik==

* [[Instalasi Squid]]
* [[Integrasi squidGuard ke Squid]]
* [[Memblok Situs Tidak Baik Menggunakan ACL Squid]]
* [[Delay Pool Squid untuk Managed Download Manager]]
* [[Script NAT Transparant Proxy & Squid]]
* [[Squid: Log File]]
* [[Squid: Block https]]
* [[Squid: Block Berdasarkan Waktu]]