I am running the web proxy in transparent mode, didn't bother to test other modes since the issues in transparent mode have not been resovled.
Basically this doesn't work at all. I can load web pages for a couple of minutes after truning it on then everything gets can't connect or just hangs.
When running an apt-get update I got the following messages:
Failed to fetch http://security.debian.org/dists/stable/updates/main/binary-i386/Packages Could not connect to security.debian.org:80 (194.109.137.218). - connect (111 Connection refused)
Failed to fetch http://security.debian.org/dists/stable/updates/main/binary-i386/Release Could not connect to security.debian.org:80 (194.109.137.218). - connect (111 Connection refused)
I turned off the proxy and apt-get update worked fine.
This issue has been there since i started testing the 4.770 version with no change. I have also noticed it is not on the known issue list even though it appears to be well documented in this forum.