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felipesalame1
New Contributor

Bloqueio de arquivos por extensão no whatsapp

I'm having difficulty blocking the sending and receiving of files on WhatsApp by extension such as .pdv, .doc and .xlsx

5 REPLIES 5
DPadula
Staff
Staff

Hi Felipe

Could you explain what you have done on your FGT? How is the firewall rule configured?

felipesalame1

Create a single-host rule to test and enable application control, file filter, and SSL inspection security profiles.


In the control app I added the signatures of "Whatsapp_Web.File.Download", and "Whatsapp_Web.File.Upload" in monitor mode and also tested in block.

In File Filter, I indicated the types of files I want to block: "msoffice", "pdf" and "msofficex".

No SSL inspection uses the profile: "deep inspection".

The rule is in Proxy-based

I wanted to block only office files, PDFs and images, however, in these settings it ends up blocking everything including audio.

DPadula

Hi Felipe,

You don't need the file filter for that, also quic protocol must be blocked. We have an article that describe the procedure. https://community.fortinet.com/t5/FortiGate/Technical-Tip-Block-WhatsApp-file-uploads-action-by-usin...

Remove the file filter from the firewall rule and confirm that it is similar to the article. Give it a try and update us.

felipesalame

Okay but I want to block only some file extensions like .doc .pdf and .xlsx
I've already tested this configuration but it blocks everything including audio

DPadula

If you can share the firewall rule settings we can check it. In case you cannot share it here, raise a case to Fortinet TAC Brazil and they will check it for you. 

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