-------------------------------------------------------------------------------
                        visonysAirlock Update
-------------------------------------------------------------------------------


This update is applicable to the following versions of visonysAirlock:

        4.1-10.18
        4.1-10.17

UPDATE
------
An update is a cumulative set of all changes (updates and hotfixes) which have
been released up to the current version. An update increases the 
buildcode of a visonysAirlock system.

Urgency Levels
--------------
SECURITY: This update/hotfix addresses security issues.
HIGH:     The installation is recommended to all customers using the affected
          Airlock version.
MEDIUM:   The installation of the update/hotfix is recommended to customers
          doing often config changes in the affected area.
LOW:      The installation is recommended to customers who have problems
          related to the issues fixed in the update/hotfix.

WARNING
-------
Visonys recommends to apply the update using a console (kvm or serial).
In some situations a network connection (as used for SSH) may break the update
process, especially if the connection is routed.

Changes
-------

4.1-10.18 [A] 20070711 urgency: HIGH
 - FIX: UD-1746 Corrected cookie based session tracking
 - FIX: UD-1747 Apply deny rules to GET forms with enabled form protection
 - FIX: UD-1748 Improved ICAP-REQMOD response headers handling
 - FIX: UD-1749 Improved ICAP-REQMOD response HTTP status codes handling

   Applying this update will restart some services and terminate all user
   sessions.

   NOTE: All current user sessions will be closed during restart.

-------------------------------------------------------------------------------
   IMPORTANT: You MUST manually activate your configuration
              in the Web GUI after installing this update.
-------------------------------------------------------------------------------



How To Install
--------------
1)  Use the configuration application to upload the complete update.zip
    (System admin -> Upload AirLock update file)

2)  Apply the update by logging in as user 'menu' either on console
    or by ssh:

    Example:
    ssh menu@my-airlock.domain.com

    The password for user 'menu' is the same as for the administrator.

    Do *not* invoke the install script directly as user root.

3)  Press activate in config GUI for using the changed rules and patterns.


Visonys Contact
---------------
If you have further questions, please contact Visonys technical support:

   Email:    support@visonys.com
   Hotline:  +41 44 366 88 77
   Internet: http://www.visonys.com