FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
raureada
Staff
Staff
Article Id 342141
Description This article describes how to block WhatsApp file uploads using Web Filter when having the error 'Couldn't send this message'
Scope FortiGate.
Solution

Create a firewall policy and enable a deep inspection profile.

 

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Then start to upload files or images to WhatsApp to generate the logs.

 

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Block those URLs using URL filter.

 

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Then enable the web filter profile on the firewall policy.

 

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When trying to upload a file, it will show the error 'Couldn't send this message'.

 

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It is also possible to see logs from the web filter.

 

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Note:

This will work if the user is using web.whatsapp.com.