On 24/06/2014 7:08 p.m., m.shahverdi@xxxxxxxxxxxx wrote: > I have configured Squid 3.3.11 in Transparent mode on ubuntu 12.04 by > below squid.conf: > > acl localhost src 127.0.0.1/32 ::1 > acl SSL_ports port 443 > acl Safe_ports port 80 # http > acl Safe_ports port 21 # ftp > acl Safe_ports port 443 # https > acl Safe_ports port 70 # gopher > acl Safe_ports port 210 # wais > acl Safe_ports port 1025-65535 # unregistered ports > acl Safe_ports port 280 # http-mgmt > acl Safe_ports port 488 # gss-http > acl Safe_ports port 591 # filemaker > acl Safe_ports port 777 # multiling http > acl CONNECT method CONNECT > > http_access allow all > http_access allow localhost > > http_port 3128 transparent > > cache_dir ufs /usr/local/squid/var/cache/squid 100 16 256 > > debug_options rotate=1 ALL,5 > > coredump_dir /var/spool/squid3 > > # Add any of your own refresh_pattern entries above these. > refresh_pattern ^ftp: 1440 20% 10080 > refresh_pattern ^gopher: 1440 0% 1440 > refresh_pattern -i (/cgi-bin/|?) 0 0% 0 > refresh_pattern (Release|Packages(.gz)*)$ 0 20% 2880 > # example lin deb packages > #refresh_pattern (.deb|.udeb)$ 129600 100% 129600 > refresh_pattern . 0 20% 4320 > > I have one network interface eth0 so I have added below rule to iptables: > > iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT > --to-port 3128 > > and I configured firefox's proxy as IP:127.0.0.1 and port:3128 Thus requires a matching forward-proxy http_port to be configured in Squid. Test the usage as would a real client of the proxy.. * for a forward-proxy configure the browser proxy settings manually or via PAC. * for "transparent interception" (note its a 2-word phrase) do not configure the browser at all. Amos