Provided by: squid_3.5.12-1ubuntu7_amd64 bug


        ext_sql_session_acl - SQL Database session lookup helper for Squid


        ext_sql_session_acl [options]


       Validates an HTTP requests access authorization with a session database.

       Taking an identity token to be validated (as determined by the external_acl_type format)
       it returns a username or tag associated with the identity token passed in.

       Common forms of identifiers are IP address, EUI (MAC) address, passwords, or UUID tokens.

       This program uses Squid concurrency support.


       --dsn       Database DSN. Default "DBI:mysql:database=squid"

       --user      Database User

       --password  Database password

       --table     Database table. Default "passwd".

       --uidcol    Unique Session Identifier column. Default "id".

       --usercol   External ACL user= result column.

       --tagcol    External ACL tag= result column.

       --cond      Condition, defaults to enabled=1. Specify 1 or "" for no condition

       --persist   Keep a persistent database connection open between queries.

       --debug     Write debug info to stderr.


       This program and documentation was written by Amos Jeffries <>

       Based on original work in DB_auth by Henrik Nordstrom <> With
       assistance of Nishant Sharma <>


        * Copyright (C) 1996-2015 The Squid Software Foundation and contributors
        * Squid software is distributed under GPLv2+ license and includes
        * contributions from numerous individuals and organizations.
        * Please see the COPYING and CONTRIBUTORS files for details.

        Copyright (C) 2012 Amos Jeffries <>

        This program is free software. You may redistribute copies of it under the
        terms of the GNU General Public License version 2, or (at your opinion) any
        later version.


       Questions on the usage of this program can be sent to the Squid Users mailing list


       Bug reports need to be made in English.  See for details of what you need to include
       with your bug report.

       Report bugs or bug fixes using

       Report serious security bugs to Squid Bugs <>

       Report ideas for new improvements to the Squid Developers mailing list


       squid (8), GPL \fIs0(7),

       The Squid FAQ wiki

       The Squid Configuration Manual