Teamviewer Firewall Whitelist Here

You are whitelisting the destination , not the port. If you allow port 5938 to "Any" IP address, malware on your network could use that port to exfiltrate data to a bad server in Russia.

Few things are more frustrating in IT support than the dreaded "Connection failed. Partner did not connect to the router." error message. teamviewer firewall whitelist

Here is exactly how to configure your "TeamViewer Firewall Whitelist" to ensure flawless remote connections. Many guides tell you to just open port 5938. That works for home users, but in an enterprise environment, you need whitelisting . You are whitelisting the destination , not the port

Whitelisting means telling your firewall: "Do not inspect, block, or question traffic coming from TeamViewer’s official servers. Let it pass immediately." Partner did not connect to the router

| Protocol | Port(s) | Destination | Purpose | | :--- | :--- | :--- | :--- | | TCP | 443 | *.teamviewer.com | Web login & authentication | | TCP | 5938 | *.teamviewer.com | Primary data channel | | TCP | 80 & 443 | master.teamviewer.com | Fallback & master routing |