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
Now when I send request to squid I'm getting access denied error as
below:
The following error was encountered while trying to retrieve the URL:
http://stackoverflow.com/
ACCESS DENIED.
Access control configuration prevents your request from being allowed at
this time. Please contact your service provider if you feel this is
incorrect.
Your cache administrator is webmaster.
