Which ports need to be open on my network?

If you are using Threema behind a Firewall, please make sure that the following TCP ports are open:

• 5222
  
• 443
  

To make Threema Calls, port 3478 or port 53 needs to be open for outgoing UDP STUN/TURN traffic.

To reliably receive push notifications, the following TCP ports need to be open:

• 5223 (Apple)
  
• 5228-5230 (Google)