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Required ports for WhatsApp

Intro

Ran into a little fun time at work recently. A user was intermittenytly seeing WhatsApp fail to connect. Poked around for a bit and figured out that we didn’t have all the required ports open on our guest wifi network. I spent a while trying to track down a definitive list of ports that are necessary for WhatsApp. Found some dated and inaccurate references scattered around, but finally got a true list from their support team. Enjoy!

Ports

Protocol Port Number
TCP 80
TCP 443
TCP 5222
UDP 3478
UDP 53
UDP 40020
UDP 57923