Block Attachments by File Type

We have requirement where we want to block emails with attachment type :
.ade .cmd .eml .ins .mdb .mst .reg .url .wsf .adp .com .exe .isp .mde .pcd .scr .vb .wsh .bas .cpl .hlp .js .msc .pif .sct .vbe .bat .crt .hta .jse .msi .pl .scx .vbs .chm .dll .inf.lnk .msp .pot .shs .wsc… etc.
Some of these extensions are not listed in File type under content filter. Please let me know the alternate way to block the same.

You will be best suited to create a message filter to scan and drop. Similar to:
attach_drop: if (attachment-filename =='(?i)\\.(ade|cmd|eml|ins|mdb|mst|reg|url|wsf|adp|com|exe|isp|mde|pcd|scr|vb|wsh|bas|cpl|hlp|js|msc|pif|sct|vbe|bat|crt|hta|jse|msi|pl|scx|vbs|chm|dll|inf|lnk|msp|pot|shs|wsc)$'){
drop();
See the User Guide for full details on message filter, and examples. They may contain a better solution, and provide you full details on getting started, tweaking.
http://www.cisco.com/c/dam/en/us/td/docs/security/esa/esa8-5-6/ESA_8-5-6_User_Guide.pdf
http://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/118145-technote-esa-00.html
-Robert

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Hello Andreas,
easiest way would be matching to the file name with the file name action in message or content filter (I suppose you'd not need a condition for that, because an action drop-attachment-by-filename is already a perfect fit, and makes the filter easier).
In theory, there is also a message filter condition called "attachment-binary-contains", which let's you enter a binary pattern, i.e. a magic number for a given file type. However, this condition has no corresponding action to drop that attachment, so it would be only useful to quarantine or drop a whole message.
Hope that helps,
Andreas

Block downloading by file type ?

Is there a way to block the downloading of particular file types eg mp3 ? and if so where and how to place the rule. Any info appreciated.
Jeff

In article <[email protected]>, JeffSheehan
wrote:
> Is there a way to block the downloading of particular file types eg mp3
> ? and if so where and how to place the rule. Any info appreciated.
>
You can create a Deny URL rule, using a wildcard (*) and an extension
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Craig Johnson
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*** For a current patch list, tips, handy files and books on
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Hi All,
Seeming the knowledge base wasnt much help and I cant get through to support.
I was hoping someone here could help.
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Hi Josh,
Thanks for the reply.
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Product: IronPort S160 Web Security Appliance
Model: S160
Version: 5.6.0-623
Serial Number: ##
Timestamp: 02 Apr 2009 16:56:55 +1100
obviously I have removed my real domain name and serial number.
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Reboot both the Mac and the server. Word opens .DOC files and Excel opens .XLS files. As you have found out by copying the files to the computer. It is the connection between the 2 computer that is causing the error.

I have Microsoft Word for Mac 2011, version 14.3.1. When I try to open a document, an error occurs, says file type is "blocked from opening in this version." This was NOT immediately after a version update. Any ideas? Thank you.

I have Microsoft Word for Mac 2011, version 14.3.1. When I try to open a document, an error occurs, says file type is "blocked from opening in this version." This was NOT immediately after a version update. Any ideas? Thank you.

Take a look here:
http://support.microsoft.com/kb/953266
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Regards.

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Greetings,
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-- What happens if you compress the PDF before you email it (Highlight the PDF on the desktop and then go to File > Compress) ?
-- What happens if you send the PDF to yourself?
Cheers.

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Hi
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Credits to The specified item was not found. for the forum thread Note 1170922: Can allowed extensions be configured in Config Tool?.
Best regards,
Aliaksandr Zhukau
Edited by: Aliaksandr Zhukau on Aug 6, 2010 11:25 PM

Block Attachments by File Type

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