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FAQ: Enterprise Content Delivery Network (eCDN)

Enterprise Content Delivery Network (eCDN) is a peer-to-peer delivery system that allows for minimal local bandwidth consumption caused by multiple viewers on one network, such as a corporate setting.

You can learn about Livestream's eCDN here. Below are common questions about eCDN.

 

What devices and browsers are compatible with Livestream's eCDN?

 

Livestream’s eCDN works on all operating desktop systems and all modern browsers with the exception of Edge and Internet Explorer.

 

What happens on incompatible devices and browsers?

 

Content will be streamed directly from the CDN and will not be delivered via peer-to-peer, but playback will remain unaffected.

 

Do I need to install any plugin or software on the user’s devices?

 

No. Livestream’s eCDN works behind the scenes for viewers.

  

Do I need to install any hardware caching servers or virtual machines on my network?

 

No. Our solution is based on a peer-to-peer technology that operates on workstation browsers and does not require any hardware or servers to install in your network.

 

What formats are compatible with eCDN?

 

Our solution supports HLS (HTTP Live Streaming)

 

What protocols are used and are they compatible with my network?

 

Our solution is based on widely-used internet standards that work in the vast majority of network environments: HTTPS, secure web sockets and webRTC.

 

What is WebRTC?

 

WebRTC an internet standard initiated by Google to allow direct connections between browsers.

 

How many concurrent users do you need to have the eCDN solution working?

 

Generally, ten to twenty users at the same site are enough to see the benefits of Livestream’s peer-to-peer eCDN. The more users, the more network relief Livestream can offer.

 

Can content exchanged via peer-to-peer be intercepted or replaced?

 

The integrity of every exchange is validated using cryptographic checksums to ensure that the video segment received is identical to the segment offered by the server. All data exchanges are made using secured encrypted protocols.

 

What ports or domains need to be opened?

 

There is a certain number of domains that need to be opened on the port 443 (HTTPS and WebSockets) for users to access the Livestream platform.


On top of this, WebRTC randomly uses any port between 50000 and 64000, which means the Firewall needs to accept all of those ports to allow extra-firewall WebRTC connections.

 

As an alternative, some browsers allow you to change the ports range used by WebRTC with advanced configuration, such as the Windows registry for Chrome.


Finally, the connection to our STUN server for webRTC connections uses port 19302.

 

Is the solution compatible with stream encryption? Geo-blocking?

 

The solution is fully compatible with every stream protection mechanism, including encryption and geo-blocking.

 

Do I need, or can I use internal STUN servers?

 

The webRTC connection uses STUN servers and they use the internal IP addresses of the clients to connect them. To keep those fully secured, we use a public STUN server that does not log the connection, but you can also deploy and use your own STUN servers.

 

Can I have an “on-premises” backend?

 

Our technology leverages the scalability and flexibility of a cloud architecture and cannot be deployed on-premises.

 

What information does Livestream has access to?

 

The only private information we receive and use is the client IP address. We use it to match the best peers. We also receive statistics payloads from the client. Those are aggregated within seven hours, so after seven hours we do not have any more client personal information.

 

What is the information exchanged between devices?

 

We exchange the video segments and some internal metadata. We only exchange encrypted data and never use any decrypted data in our P2P exchanges.

 

Can this information be intercepted?

 

All the data exchanged is encrypted.

 

What is the information that leaves the corporate network?

 

The public IP of the client is sent to our back end along with information of the stream each client is playing. The private IP is sent to the STUN server to enable webRTC connections to pass NAT.

 

Are local IP addresses stored by Livestream?

 

The local IPs are used to create the webRTC connection. They are only received by the STUN server. By default, we use a public one hosted by Google.

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