Wowza ClearCaster system requirements

With Wowza ClearCaster™ version and later, you can connect an SDI or HDMI source to your ClearCaster and post live video to any RTMP destination to share with your viewers in minutes.


To get up-and-running, you'll need the following:

  • A Wowza account
  • Access to a video streaming service such as Wowza Video™ or an instance of Wowza Streaming Engine™; or accounts for video sharing websites such as Facebook, YouTube, Twitch, Twitter, or other RTMP destinations, depending on your preference
  • Internet connection
  • Wowza ClearCaster appliance
  • SDI or HDMI video source
  • HDMI monitor for additional broadcast information

Network requirements

To ensure that your Wowza ClearCaster operates as intended, review the following details with your network administrator to verify access to required servers and services through expected ports.

Note: All connections are initiated through an outbound request.

Outgoing communication

Wowza ClearCaster delivers data to the following ports.

Port / URIFunctionality
Port 443RTMPS and HTTPS delivery
Port 80HTTP delivery
Port 1935RTMP delivery
Port 1884MQTT messaging for all ClearCasters v1.0.5.17 and later
Port 123Time synchronization services (NTP)

Outgoing services

Wowza ClearCaster uses the following outgoing services and ports.

ServicePort / URIFunctionality
clearcaster.wowza.comTCP port 443Remote administration interface
connect.clearcaster.wowza.comTCP port 1884MQTT messaging
* port 1935Sending broadcasts to Wowza Video
graph.facebook.comTCP port 443Communication with the Facebook Graph API
clearcaster.c2.wowza.comTCP port 443Communication with the Wowza ClearCaster GraphQL API
ntp.ubuntu.comUDP port 123Time synchronization services (NTP)
wowzalicense1.wowzamedia.comTCP port 80Wowza license server 1
wowzalicense2.wowzamedia.comTCP port 80Wowza license server 2
wowzalicense3.wowzamedia.comTCP port 80Wowza license server 3
wowzalicense4.wowzamedia.comTCP port 80Wowza license server 4

Licensing server

ClearCaster checks in with the Wowza licensing server on a regular basis. If you have an enterprise proxy, you will need to pass through these communications without authentication. If you have firewall devices such as WatchGuard or Barracuda in place, there may be a factory built-in rule called Webblocker category: streaming, which is known to block the licensing validation process. For questions regarding licensing server communications, contact the Wowza Support team.

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