Squid transparent proxy blocks all HTTP traffic

kgmoney · Feb 9, 2016, 2:35 AM

Hi,

I've seen others having similar issues on the forums, but I've not seen any definitive answers that work… I'm running 2.2.6 nano on Watchguard firewall. It's working pretty well, but when I try to setup squid3 (or 2) as a transparent proxy suddenly all HTTP traffic is blocked (HTTPS still works). As soon as I disable the tranparent proxy everything works again. I can setup a non-transparent proxy and it works correctly.

Has anyone solved this?

Thanks,
Kevin

kgmoney · Feb 9, 2016, 11:56 AM

…something I forgot to mention...not sure if it's relevant. I have one port setup as WAN and I have three ports assigned to a bridge for my LAN. When I setup the transparent proxy, I'm binding it to the LAN bridge.

kgmoney · Feb 11, 2016, 12:36 PM

Some more info…

The proxy seems to work fine (normal and transparent) if I set the proxy settings in my browser. However, if I have transparent proxy enabled and remove the proxy settings from my browser, that's when I can't browse any more.

It seems like the requests just aren't being routed properly. How is the routing through the transparent proxy done?