filterip = 10.0.0.1 # eth0 IP
filterport = 8080
proxyip = 10.0.0.1 # eth0 IP
proxyport = 3128
reserveaddresslookups = on # "... unless you have a local caching DNS, leave it off ..." <- we do!! :)
usernameidmethodproxyauth = off # 
usernameidmethodntml = off # it's going to be a transparent proxy: auth wouldn't make much sense
usernameidmethodident = off #
daemonuser = 'proxy' # same uid Squid uses
daemongroup = 'proxy' # same gid Squid uses