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Blocking Email Attachments from being sent via Gmail using Trend Micro Web Security (TMWS)

    • Updated:
    • 25 Nov 2021
    • Product/Version:
    • Trend Micro Web Security
    • Trend Micro Web Security
    • Platform:
Summary

This article shows you how to prevent sending of email attachments in Gmail by creating a policy in TMWS.

Details
Public

To block email attachments (outgoing email) from being sent via Gmail:

  1. Log on to the TMWS console, and go to Administration > Cloud Service Filters.
  2. Click the +Add button.

    Click Add

    Click the image to enlarge.

  3. Set value/option of the following fields, and then click Save:
    • Filter Name: provide a filter name
    • Select the following Request Methods:
      • POST
      • PUT
    • URLs: mail.google.com
    • Header Fields:
      • Header Field Name: x-goog-upload-command
      • Operation: Contains
      • Value: start

    Cloud Filter Settings

    Click the image to enlarge.

  4. Enable the filter that was created. Do the following:
    1. Go to Policies > Cloud Access Rules.
       
      You may create a new Cloud Access Rule, or use an existing policy.
       
    2. Navigate to and click the Cloud Services tab.
    3. Tick the filter that was created.
    4. Click Save.

    Enable the filter

    Click the image to enlarge.

  5. To test if the rule works, access Gmail account and try to attach any file. If successful, a warning similar to the sample image below will be encountered:

    Test the filter

    Click the image to enlarge.

Premium
Internal
Partner
Rating:
Category:
Configure
Solution Id:
000289570
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