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READNTG.TXT
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1998-11-01
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Sophos Anti-Virus for Windows NT Release Notes
----------------------------------------------
Version 3.15, November 1998
All SWEEP versions have been updated with new virus information.
A list of new viruses is included in What's New on the CD or the
READNEWS.TXT file on the SWEEP for DOS Installation (Disk 1).
Modifications from version 3.14
-------------------------------
1. This version detects 285 more viruses than 3.14
Known problems
--------------
1. Sweeping of "Local hard drives"
Problem
-------
Jobs set to sweep "Local hard drives" do not get scheduled when changing from
3.1x non-international to 3.14-3.15 International.
The log file will either contain a reference to a successfully completed job or
list a number of files as:
Could not open '\file name'
The problem occurs only when upgrading from a non-international version,
containing a scheduled job and the 'Local hard drives' reference,
to 3.14-3.15 International releases.
Solution
--------
Run the Sweep International GUI, select the job containing the reference to
"Local hard drives", select 'Edit', click on the selection box of the path
edit box and finally, click on "Local hard drives" and then OK.
Close the Sweep GUI.
Additional information
----------------------
1. InterCheck Client
--------------------
This version of the InterCheck Client supports 'on-the-fly'
disinfection - though this is disabled by default. This behaviour
can be modified via the "Action" page of the InterCheck Client
configuration dialog. The InterCheck Client will only disinfect a
file once. If after one such disinfection a file is still found to
be infected then access to it will be refused.
All documents reported as having been disinfected should be
reviewed to ensure that the virus made no changes to the content.
2. Centralised Installation
---------------------------
The installation program provides an option to install a copy of
the installation disks on a file server. SWEEP for Windows NT can
then be installed quickly and easily by executing the setup
program from the file server. Furthermore, on computers where
SWEEP for Windows NT has been installed in this manner, the update
process will be invoked automatically whenever the file server
installation is upgraded.
3. Disinfecting files
---------------------
SWEEP for Windows NT allows administrators to disinfect files to
which they do not have write access. This feature is available
only for scheduled sweeps of local drives. The SWEEP service must
be running using the 'system' account or if an alternative account
is being used then the account must be assigned the "Back up files
and directories" right together with the "Restore files and
directories" right.
4. Administration Security
--------------------------
An administrator can choose to set the immediate job
configuration details which ALL non admin users MUST use. This
can be done via the new "security" option found on the options
menu when the GUI is run by a member of the administrator group
on the local machine.
Choosing to use this feature disables non-administrators access
to the immediate job configuration data. Non-administrator
users will only be able to start and stop immediate jobs and
choose which of their own files they may SWEEP.
The token %USER% is supported.
For example, if the adminstrator wishes to copy all infected
files to a central directory and keep individual users files
separate then they can set the following path type in the
action section of the administrator
config:-
\\<SERVER_NAME>\<SHARE_NAME>\<PATH>\%USER%
This will give a directory structure like:
\\<SERVER_NAME>\<SHARE_NAME>\<PATH>\<UserName1>\v.000
\\<SERVER_NAME>\<SHARE_NAME>\<PATH>\<UserName1>\form.000
\\<SERVER_NAME>\<SHARE_NAME>\<PATH>\<UserName2>\mydoc.000
\\<SERVER_NAME>\<SHARE_NAME>\<PATH>\<UserName3>\v.000
\\<SERVER_NAME>\<SHARE_NAME>\<PATH>\<UserName3>\v.001
\\<SERVER_NAME>\<SHARE_NAME>\<PATH>\<UserName3>\v.002
The same token can be used in the reports directory to make
individual report file names or to place users report files in
separate sub-directories.
The administrator defined config details are stored in the
services' HKEY_USERS section of the registry (under
.DEFAULT\Software\Sophos\SWEEPNT if the service is logged in
as LocalSystem and under the services own user key otherwise).
The .DEFAULT\Software\Sophos\SWEEPNT hive can be deployed to
remote machines using swdeploy (available from Sophos).
NB If you wish to select "Scheduled access to network
resources" please ensure that the account used is one
specific to SWEEP. Using an administrator account which may
be accessed by an interactive user may cause the
administrator defined configuration to be corrupted.
Troubleshooting
---------------
1. Errors accessing shared CD ROM drives from remote computers
--------------------------------------------------------------
After installing SWEEP for Windows NT you may encounter
difficulties accessing a second shared CD ROM drive from remote
computers. This is a restriction imposed by the default NT server
configuration. The following registry entry is required to solve
the problem.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\
Parameters\IrpStackSize
Type: REG_DWORD Data: 0x6
Please use REGEDT32 to modify or create this entry in the registry.
You will need to restart the system before the change will take
effect. If you still experience problems a larger value can be
selected (maximum 12).
2. Auto-upgrade service
-----------------------
To function correctly the auto-upgrade service MUST be installed
as the LocalSystem account and have "Allow Service to Interact
with Desktop" selected.
3. Sweep service application error
----------------------------------
Occasionally SWEEP may encounter files whose structure can lead
to the service appearing to "hang" or clients losing their
connections. This problem is related to checking of some types
of non-template Word documents. The following registry entry
will disable the checking of non-template documents.
HKEY_LOCAL_MACHINE\SOFTWARE\Sophos\SweepNT\Advanced\NITB
Type: REG_DWORD Data: 0x0
If problems persist set the following entry to turn off SWEEP's
ability to check VBA3 documents (e.g. Excel files)
HKEY_LOCAL_MACHINE\SOFTWARE\Sophos\SweepNT\Advanced\VBA3
Type: REG_DWORD Data: 0x0
Please use REGEDT32 to modify or create these entries in the
registry. You will need to restart the service before the change
will take effect.
4. Novell Application Launcher
------------------------------
NAL Version 2.01 and Windows NT v4. - when a user logs out and a
new user logs back in NAL appears not to be clearing itself from
memory. When the new user logs in the NAL launcher pops up and is
blank.
Solution - Exclude the file $special.net, within Options\Exclusion
list on the Sweep for Windows NT GUI.
5. Intercheck Logging
---------------------
For InterCheck Logging to work correctly the SWEEP for Windows NT
Network Service must use an account that is able to see the InterCheck
Server share. This may not be the case if the auto-upgrade option was
not selected during installation.
If InterCheck Logging fails to work correctly a suitable account may be
selected as follows:
* Go to Control Panel->Services.
* Select the SWEEP for Windows NT Network Service.
* Click the Startup... button.
* Under Log on As: select the field This Account.
* Choose a DOMAIN\User with access to the desired InterCheck Server share.
* Fill in the password fields.
* Click OK to confirm the change.
* Stop and then Start the service.
6. Third party applications using SAVI.DLL
------------------------------------------
If the installed versions of SAVI.DLL and SWDETECT.DLL do not match, third
party applications may report that Sophos-Anti Virus failed to load
correctly. Sophos recommends that users upgrade both SWDETECT.DLL and
SAVI.DLL each month to ensure full protection of their system.
Versions of Sophos Anti-Virus before 3.15 require SAVI.DLL version 1.03.
After this point users should install version 1.04 of SAVI.DLL.
To install SAVI and the Sophos Anti-Virus engine follow the following
procedure
* Stop the third party application
* Copy the Sophos Anti-virus components to the third party directory.
* Restart the third party application
For example to upgrade the Content Technologies MAILsweeper and
WEBsweeper services
1. Stop the Integralis MAILsweeper and WEBsweeper services
Start/Settings/Control Panel/Services
Integralis MAILsweeper
Stop
Start/Settings/Control Panel/Services
Integralis WEBsweeper
Stop
2. Installation of Sweep for NT engine
Put Sweep for NT Installation disk into A: drive
type Expand A:\SWDETECT.DL_ <dest>SWDETECT.DLL
type Expand A:\SAVI.DL_ <dest>SAVI.DLL
Where <dest> represents the MIMEsweeper program directory,
usually:
C:\MSW\PROGRAM.
giving for example
Expand A:SWDETECT.DL_ C:\MSW\PROGRAM\SWDETECT.DLL
Expand A:SAVI.DL_ C:\MSW\PROGRAM\SAVI.DLL
3. Restart the Integralis MAILsweeper and WEBsweeper services
Start/Settings/Control Panel/Services
Integralis MAILsweeper
Start
Start/Settings/Control Panel/Services
Integralis WEBsweeper
Start
Compatibility issues
--------------------
1. NT 4.0 service pack 2
------------------------
Important: Do not use this software with NT 4 service pack 2
unless you have installed the Microsoft hot fix KRNL40I.EXE.
2. Banyan VINES Support
-----------------------
Please note that InterCheck will not check files on remote Banyan
VINES drives unless the Banyan VINES network support was started
at boot time.
3. PathWorks Version 4 Server
-----------------------------
NT clients which use a Pathworks 4 server for the central
installation directory may repeatedly auto upgrade.
This problem only occurs on Pathworks 4 and not on the more recent
Pathworks versions.
4. IntraNetWare Client32 v4.11 connected to a Novell 4.x server
---------------------------------------------------------------
SWEEP for Windows NT may fail to auto-upgrade when the customer is
using IntraNetWare Client32 v4.11 centrally installed from a
Novell 4.x server.
The failure is due to changes Novell have made to the NT security
model when using their client software. Previously (v4.10) a
service inherited the rights of the currently logged on user. This
is no longer true. As a result services such as the 'SWEEP for
Windows NT Network' service may not be able to access the central
installation area and are therefore prevented from auto-updating.
At the moment, while the security model is in a state of flux, all
Sophos can suggest is that you stay with or roll-back to Client32
v4.10. If necessary you should contact Novell direct for further
information.
----------------
Sophos Plc, The Pentagon, Abingdon, OX14 3YP, England
Tel 01235 559933 o Fax 01235 559935
Sophos Plc, 2, Place de la Defense, BP240, 92053 Paris la Defense, France
Tel 01 46 92 24 42 o Fax 01 46 92 24 00
Sophos GmbH, Am Hahnenbusch 21, D-55268 Nieder-Olm, Germany
Tel 06136 91193 o Fax 06136 911940
Sophos Inc, 18 Commerce Way, Woburn, MA 01801, USA
Tel 781 932 0222 o Fax 781 932 0251
Sales email sales@sophos.com
Technical support email support@sophos.com
Web http://www.sophos.com/