RE: ISA 2004 - Messager Screener and Download Limit

Hi Crina,

again, I thank you for you quick response and help.

Best Regards.

Luiz


""Crina Li"" wrote:

Hi Luiz,

Thank you for posting in the SBS Newsgroup.

From your description, I understand that you want to know if Message
Screener can filter email attachments and if you can limit downloads via
ISA 2004. If I have misunderstood your concern, please do not hesitate to
let me know.

Regarding Message Screener, please refer to the following information:

You can configure Message Screener to address these example scenarios:

1. You want to block e-mail messages containing a specific string, because
that string is associated with a virus-carrying e-mail message.
2. You want to block e-mail messages containing a specific attachment, or
type of attachment, known to be a source of viral infection.
3. You want to block a specific domain which is a source of spam.
4. You want to block specific outgoing mail. If you install Message
Screener in a perimeter network, you can configure Message Screener to
block specific outgoing mail. This configuration is described in Screening
Outgoing E-Mail Messages Using Message Screener.

Related information:

888709 When to use the ISA Server 2004 SMTP filter and Message Screener
http://support.microsoft.com/?id=888709

838246 How to install the ISA Server 2004 Message Screener on a remote
computer
http://support.microsoft.com/?id=838246

http://www.isaserver.org/articles/2004inboundsmtprelay.html

http://www.microsoft.com/technet/prodtechnol/isa/2004/plan/smtpfilter.mspx

Regarding limit downloads, please refer to the following:

When you create an access rule, you can limit what content types the access
rule applies to. Content groups are specified by configuring the content
types Multipurpose Internet Mail Extensions (MIME) types and file name
extensions. Content type control applies only to the protocols HTTP and
tunneled FTP traffic. For other protocols, including HTTPS, ISA Server
ignores always the Content groups specified when processing the rule.

When a client requests FTP content, ISA Server checks the file name
extension of the requested object. However, when a client requests HTTP
content, ISA Server sends the request to the Web server. When the Web
server returns the object, ISA Server checks the object's MIME type or its
file name extension, depending on the header information returned by the
Web server.

Related information:

How to schedule content download jobs to occur several times per day in ISA
Server 2004
http://support.microsoft.com/default.aspx?scid=KB;EN-US;838258

Understanding the ISA 2004 Access Rule Processing
http://www.isaserver.org/articles/ISA2004_AccessRules.html

I also provide some documents for your reference:

ISA Server 2004 Performance Best Practices
http://www.microsoft.com/technet/prodtechnol/isa/2004/performancebestpractic
es.mspx

How to configure networks in ISA Server 2004
http://support.microsoft.com/?id=867483

What's New and Improved in ISA Server 2004
http://www.microsoft.com/isaserver/evaluation/whatsnew.asp

ISA Server 2004 Quick Start Guide
http://download.microsoft.com/download/3/7/b/37b0cbc4-e578-4082-a779-de4fbe8
76f06/ISA2004SE_quickstartguide-Rev%201%2003.doc

ISA Server 2004 ISA Server 2004 Configuration Guide
http://download.microsoft.com/download/3/7/b/37b0cbc4-e578-4082-a779-de4fbe8
76f06/ISA2004SE_configguide-Rev%201%2003.doc

837572 Performance tuning options for Internet Security and Acceleration
Server 2004
http://support.microsoft.com/default.aspx?scid=kb;EN-US;837572

This response contains a reference to a Third party World Wide Web site.
You should know that Third party sites are not under the control of
Microsoft. Accordingly, Microsoft can make no representation concerning
the content of these sites. Microsoft is providing this information only
as a convenience to you. This is to inform you that Microsoft has not
tested any software or information found on these sites and therefore
cannot make any representations regarding the quality, safety, or
suitability of any software or information found there. There are inherent
dangers in the use of any software found on the Internet, and Microsoft
cautions you to make sure that you completely understand the risk before
retrieving any software on the Internet.

I appreciate your time and look forward to hearing from you.

Best regards,

Crina Li (MSFT)

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

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=====================================================

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--------------------
| Thread-Topic: ISA 2004 - Messager Screener and Download Limit
| thread-index: AcbHi1KDr42d7jWlSbCHCwd8c8YzsA==
| X-WBNR-Posting-Host: 200.138.123.186
| From: =?Utf-8?B?THVpeg==?= <Luiz@xxxxxxxxxxxxxxxxxxxxxxxxx>
| Subject: ISA 2004 - Messager Screener and Download Limit
| Date: Thu, 24 Aug 2006 07:41:02 -0700
| Lines: 9
| Message-ID: <7B081807-1859-466E-8F69-88A07F57D714@xxxxxxxxxxxxx>
| MIME-Version: 1.0
| Content-Type: text/plain;
| charset="Utf-8"
| Content-Transfer-Encoding: 7bit
| X-Newsreader: Microsoft CDO for Windows 2000
| Content-Class: urn:content-classes:message
| Importance: normal
| Priority: normal
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.1830
| Newsgroups: microsoft.public.windows.server.sbs
| Path: TK2MSFTNGXA01.phx.gbl
| Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windows.server.sbs:292606
| NNTP-Posting-Host: TK2MSFTNGXA01.phx.gbl 10.40.2.250
| X-Tomcat-NG: microsoft.public.windows.server.sbs
|
| Hi,
|
| If I install Message Screener component of ISA 2004, can I filter the
emails
| attachments that arrive to my Exchange?
| Can I limit the downloads through ISA 2004?
|
| Thanks
|
| Luiz
|


.

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