>что нужно вписать в squid.conf? ну дык вот описание access_log.
не помню в какой версии squid в этой директиве появились acl, но в 2.6.STABLE12 уже точно есть.
# TAG: access_log
# These files log client request activities. Has a line every HTTP or
# ICP request. The format is:
# access_log <filepath> [<logformat name> [acl acl ...]]
#
# Will log to the specified file using the specified format (which
# must be defined in a logformat directive) those entries which match
# ALL the acl's specified (which must be defined in acl clauses).
# If no acl is specified, all requests will be logged to this file.
#
# To disable logging of a request use the filepath "none", in which case
# a logformat name should not be specified.
#
# To log the request via syslog specify a filepath of "syslog"