I’ve had Squid running on Ubuntu for a few weeks. I’d configured the proxy
settings in the browsers. Everything has been working well and I've been
pleased with the results. But now I need to make this a transparent proxy
and I’m running into trouble & need some help.
I’ve got a Destination NAT rule set up on my router to forward TCP port 80
traffic to my proxy. And I removed proxy configuration settings from the
browsers. After enabling this DNAT rule, I see requests being logged to
/var/log/squid3/access.log.
Results when navigating to http://www.google.com:
The following error was encountered while trying to retrieve the URL: /
Invalid URL
Some aspect of the requested URL is incorrect.
Some possible problems are:
-Missing or incorrect access protocol (should be “http://”; or similar)
-Missing hostname
-Illegal double-escape in the URL-Path
-Illegal character in hostname; underscores are not allowed.
Next, I added "intercept" to http_port like so:
"http_port 192.166.2.55:3128 intercept"
Results: Access Denied.
My abbreviated /etc/squid3/squid.conf looks like this:
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
http_access allow localhost
http_access allow all
I'm new to Squid/Ubuntu, so I likely overlooked something. What am I
missing? What troubleshooting step(s) should I take next?
-DG
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