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UTM - Microsoft Teams

Hi everyone,

I'm with a problem on my company, that happened when on Microsoft Teams, i have more than 2 useres on same meeting.
I have a lot of freezes and sometimes i lost the connection. I already made a lot os tests ( networking, ISP, etc ), and i think the problem is on utm.
Anyone can give me some ideas to fix this problem ?

Thanks,
T. Aguiar

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+1 Steve Weißflog over 4 years ago

I think intrusion prevention is the point...

Try an exception (especially for UDP Flood Protection) for using this services

UDP

Dest. Ports: 1:65535

Source Ports: 3478:3481

Normally also a firewallrule for UDP Dest. Ports 3478:3481 is needed.

regards
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0 samson b over 4 years ago in reply to Steve Weißflog

First post! This place has been very helpful to me so I'm attempting to contribute :-)

I can confirm that UDP Flood Protection is the culprit. I've been working on this myself last few days. Added tons of exceptions from the list here:

https://docs.microsoft.com/en-us/office365/enterprise/urls-and-ip-address-ranges?redirectSourcePath=%252fen-us%252farticle%252fOffice-365-URLs-and-IP-address-ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2

However, when I created my UDP services I had the destination set as 3478:3481 since that's the default way UTM sets it up. Once I created one for IN with source set to 3478:3481 it started working with UDP Flood Protection enabled. Hoorah! Thanks guys.
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0 tiagoaguiar over 4 years ago in reply to samson b

Perfect! It worked ! thank you all.
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0 tiagoaguiar over 4 years ago in reply to samson b

Perfect! It worked ! thank you all.
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