| Description | This article describes how to block Voip calls on WhatsApp and Telegram, and also blocking the telegram application. |
| Scope | FortiGate. |
| Solution |
Blocking VoIP calls on Telegram.
Step 1: Go to Security profiles -> Application Control -> Create New.
Step 2: Go to Application and Filter Overrides.
Step 3: Select OK to save.
Step 4: Select OK to save.
Step 5: Apply the new profile on a firewall policy together with the SSL deep inspection profile.
Step 6: Make a call on Telegram.
Step 7: Check the logs.
Blocking Telegram.
Step 1: Create an application profile under Security Profile -> Application Control -> Create new.
Step 2: Go to Application and Filter Overrides.
Select Create New and then on the search bar write Telegram.
Step 3: Select OK to save.
Step 4: Select OK to create the new application control profile.
Step 5: Apply the Telegram application profile and deep inspection Profile on a firewall policy.
Step 6: Test the Telegram application.
Telegram was blocked successfully, the application is in a loading state permanently.
Logs:
Blocking WhatsApp VoIP calls.
Step 1: Create an application control profile using the WhatsApp object.
Security Profile -> Application Control -> Create New -> Application and Filter Overrides. 
Step 2: Select Create New and type WhatsApp on the search bar.
Step 3: Select WhatsApp_Voip.Call and OK.
Select OK again to save the new application control filter.
Step 4: Apply the filter on a Firewall policy.
Apply the Application control profile together with a deep inspection profile.
Select OK to save.
Step 5: Go to WhatsApp and make a call.
The 'Call Failed' message in the chat windows indicates that the call was blocked successfully.
Step 6: Check the Security event logs for the results.
Log & Report -> Security Event -> Application control.
 |
