I'm trying to setup squid on my computer to control the outgoing traffic from the same computer only. If my understanding is correct, squid runs as user "squid" on on most Linux distributions (mine is Fedora if it matters?).
I have setup iptables to drop all outgoing packets except those from uid 0 and uid 23 (root & squid).
:INPUT DROP [0:0] :FORWARD DROP [0:0] :OUTPUT DROP [0:0] -A INPUT -i lo -j ACCEPT -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -j DROP -A FORWARD -j DROP -A OUTPUT -m owner --uid-owner 0 -j ACCEPT -A OUTPUT -m owner --uid-owner 23 -j ACCEPT -A OUTPUT -j DROP COMMIT
I then want to have to manually enter the squid proxy information into the browser for each local user account (so I don't think I'm after a transparent setup). If possible I would like a user/pass required to be able to connect to squid, so to prevent users having any access to the internet except via the squid proxy?
My current squid.conf is as follows, but it doesn't work at all, and obviously doesn't incorporate a user/pass requirement:
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 deny !safe_ports http_access deny CONNECT !ssl_ports http_access allow localhost manager http_access deny manager http_access allow localhost http_access deny all http_port 3128 coredump_dir /var/spool/squid refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern .
Is what I'm trying to do achievable, and am I going about it the right way?
Will what I've done with iptables work?
I realize this is not something I'm going to learn to setup correctly in 10 minutes so any help/pointers to guides or even alternate solutions as to how to achieve this are all welcome?