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Old 04-16-2009, 04:59 PM   #1
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NAT/Squid/Dansquradian -HELP!


I'm running a multi-home linux server that uses nat to pass my workstations to the web.

eth0 - - public side
eht1 - - private side

I've installed squid 3.0 and dansguardian 2.10 and nothing is filtering or being recorded in either the squid access.log or the dansguardian access.log

Here is my iptables config:

/sbin/modprobe iptable_nat
/usr/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
/usr/sbin/iptables -A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT
/usr/sbin/iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT
/usr/sbin/iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 8080

Old 04-16-2009, 05:09 PM   #2
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Registered: Mar 2006
Location: Sydney, Australia
Distribution: Fedora, CentOS, OpenSuse, Slack, Gentoo, Debian, Arch, PCBSD
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Don't you want your redirect from eth1?

Also, have you allowed forwarding (echo "1" > /proc/sys/net/ipv4/ip_forward"

What happens if you connect directly to 8080 rather than 80?
Old 04-16-2009, 06:13 PM   #3
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Registered: Apr 2006
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That worked!

ip_forward was already set as I was NATing successfully. I changed the eth0 to eth1 and it started writing to the logs, both squid and dansguardian. I was then getting ACCESS DENIED from squid. I hammered throught the squid.conf and allowed access and now it's working!



dansguardian, nat, network, squid

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