[semi-OT]: Transparent proxy: SQUID & IPTABLES

[Emilio Casbas]

Giovanni Costagliola wrote:

>Hello all,
>
>            I'm attempting to configure a transparent proxy on my lan.
>
> 
>
>Default gateway and proxy reside on the same machine.
>
> 
>
>I issued the following iptables command:
>
> 
>
>iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT
>--to-ports 8080
>
> 
>
>where interface eth0 is the one that gateways internal clients.
>
> 
>
>I receive a stupid message by squid caused by incorrect URL syntax.
>
> 
>
>It seems that getting an URL such as:
>
> 
>
>http://www.google.it/search?sourceid=navclient
><http://www.google.it/search?sourceid=navclient&hl=it&ie=UTF-8&q=foobar>
>&hl=it&ie=UTF-8&q=foobar
>
> 
>
>reach Squid layer as
>
> 
>
>/search?sourceid=navclient&hl=it&ie=UTF-8&q=foobar
>
> 
>
>Missing of the protocol and host part!
>
> 
>
>How is it possible?
>
> 
>
>  
>
This is a tipical proxy request
You have to configure squid to accept HTTP requests
with partial URIs.

see http://www.squid-cache.org/Doc/FAQ/FAQ-17.html

Thanks
Emilio C.