[squid-users] transparent proxy w/ squid

Hello,
This is going to be a pretty long question (and the worse thing is I have done
this before without this problem).
I am setting up (well trying too) a transparent proxy server using the squid
proxy server and iptables. These are the steps I went through:
1) Downloaded the latest 2.5STABLE2 source for squid and compiled it with the
--enabe-linux-netfilter option.
2) Changed the following lines in the squid.conf file:
        httpd_accel_host virtual
        httpd_accel_port 80
        httpd_accel_with_proxy on
        httpd_accel_uses_host_header on
3) Put the following line in my firewall script to route all port 80 traffic
coming from inside my network to port 3128 (squid's proxy port)
        iptables -t nat -A PREROUTING -i $INT -p tcp --dport 80 -j REDIRECT
--to-port
3128
4) Restarted my firewall and initalized squid and started squid.

It works great when the proxy is set up in the web browser, but the problem is
I do not want to go around and set the web browser on every computer I want
it to be a "transparent proxy" where all www traffic is automaticly
redirected through the squid proxy server.

The error I get in the web browser comes from the proxy server. It is a
Invalid URL error and it says that it was having troublr retrieveing the URL
for / (even through I put a correct address in the addres bar).

Checking the squid logs, it does not show a URL but just the /. Kind of like
the address it is tring to get to is not being redirected to the proxy
server.

I do a TCPDUMP and it shows me connecting to the address that I put in the
address bar (from the computer behind the proxy server).

Any ideas on what I forgot to do (been banging my head into the wall all day
today and it is beginning to hurt :O(.

Thanks in advance for any help you can provide.

Jon
Received on Thu Apr 24 2003 - 10:36:36 MDT