Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Microsoft eCDN setup has some networking requirements mainly in the following areas.
When a user browses to the event page, the client needs to download the Microsoft eCDN script - that requires an https connection to
*.ecdn.teams.microsoft.com.Once downloaded, it creates a secure WebSocket connection to our backend.
The peer-to-peer connection itself is a UDP connection over the port range 1025-65535, chosen randomly by the browser. Chromium browsers such as Microsoft Edge and Google Chrome allow the port range to be configured using the WebRtcUdpPortRange policy.
External connections
Connections that go out to the internet. Usually packets in these connections go through the firewall and need allow-listing.
| Hostname | Ports | Protocol | Description |
|---|---|---|---|
| *.ecdn.teams.microsoft.com | 443 | HTTPS over TCP | Microsoft eCDN scripts |
| *.ecdn.teams.microsoft.com | 443 | WebSocket over TCP | Microsoft eCDN backend |
| *.ecdn.teams.cloud.microsoft | 443 | same as above two | upcoming unified ___domain |
US government tenants (GCC and GCC High)
US government and other high-security customers must use the following hostnames instead.
| Tenant type | Hostname |
|---|---|
| GCC | *.ecdn.gcc.teams.microsoft.com |
| GCC High | *.ecdn.gov.teams.microsoft.us |
Important
We've begun migrating domains from teams.microsoft.com to teams.cloud.microsoft in accordance with the Unified Domains initiative. We urge customers to add the new ___domain(s) to their network traffic filters and policies (firewall, proxy, VPN, mDNS) as soon as possible, and to retain the legacy domains until noted otherwise.
Internal connections
Connections that remain inside the corporate network. Usually packets in these connections don't go through a firewall and wouldn't need any configuration to allow them.
| Hostname | Ports | Protocol | Description |
|---|---|---|---|
| n/a | 1025-65535 | SCTP over DTLS over UDP | P2P communication |