TeamViewer primarily operates on three specific ports. It attempts to connect using them in a specific order of preference to ensure reliability even on restrictive networks. 1. Port 5938 (TCP/UDP) – The Primary Choice This is the most critical port for TeamViewer.
Have a strict firewall that's still blocking you? Drop the specific error code in the comments below.
If port 5938 is blocked, TeamViewer will automatically attempt to use . teamviewer port
TeamViewer primarily uses the following ports for communication:
If you’ve ever tried to run TeamViewer inside a strict corporate network, on a firewall-protected server, or via a VPN, you’ve likely hit the same frustrating wall: Connection refused. TeamViewer primarily operates on three specific ports
The genius of the TeamViewer architecture is that it to be opened on your firewall.
So, what is the official , and when do you need to care about it? Port 5938 (TCP/UDP) – The Primary Choice This
By starting the connection from inside your network, the software bypasses the need for port forwarding (NAT) on your router.