Troubleshooting Tip: Allow port ranges and protocol to access WhatsApp VOIP Feature

Description

This article describes how to allow WhatsApp Voice calls through a Fortinet firewall. It is necessary to create a custom service definition that encompasses the necessary protocols and port ranges.

Scope

FortiGate.

Solution

Allow the LAN user to access the WhatsApp Voice/Video calls through a Fortinet firewall,  Sometime the user will face issues with WhatsApp with ISDB.

There is a firewall policy that allows WhatsApp Voip Traffic with the Application Control. as shown in the below image:

Create a Port for the Whatsapp VoIP communication with the customs Port ( TCP/UDP):

Customs Ports for WhatsApp:

Technical Note: WhatsApp Voice Call is not working when connected to FortiGate

After creating an Application control with a Signature, and Service Ports, create a Firewall Policy:

WhatsApp video/Voice Issue will be resolved.


Related article:

Troubleshooting Tip: WhatsApp video calling / voice calling does not work when ISDB is used