| ... | ... | @@ -56,11 +56,11 @@ You find some more documentation at the [fairchat FAQs](https://fairchat.eu/fair |
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Media streams go with RTP UDP through ports 10000-20000. If your firewall is blocking those, as a fallback, https TCP 443 is being used (with poorer quality).
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On a terminal, you (or a technician at your office) can test if you can reach the UDP ports with the netcat command:
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On a terminal, you (or a technician at your office) can test if you can reach high UDP ports with the netcat command:
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```
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nc -vuz media.fairmeeting.net 10000
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Connection to media.fairmeeting.net 10000 port [udp/*] succeeded!
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nc -vuz fairmeeting.net 10000
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Connection to fairmeeting.net 10000 port [udp/*] succeeded!
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```
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There may be stacked router and firewall stacks, which make it impossible to send media streams. In some organisations any media stream may be blocked. Talk to your network administrator to allow media streams to IP 51.38.117.249, 144.76.116.175, 5.132.159.26, 144.76.116.252, 144.76.116.175, 144.76.238.184, 144.76.238.118 or *.fairmeeting.net
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