Allowing Zoom through firewall

[DavR]

Has anyone had a real nightmare allowing Zoom through their firewall?

 

Before we start, yes, I know Zoom is awful and we shouldn't use it, but I'm overridden from above, because it's what people are now used to using. We've done a DPIA and accepted the risks.

 

We've been trying to use this for weekly contact meetings between teacher and their class, but have had nothing but problems doing it from with school. Initially it was blank screens and no audio, through various packet captures and traces our firewall guy has got us as far as connecting, but poor performances - lagging, glitching.

 

Annoyingly, every time I try and test it, it works fine, but teachers go live I'm reported it becomes unusable. People can't see the teacher from home either.

 

I was wondering if anyone here would be happy to share their firewall rules for Zoom? Zoom support won't talk to our firewall guy because he's not a paid business account member.....!

[Jobos]

What firewall are you using?

[localzuk]

Have you put in place all the rules needed? https://support.zoom.us/hc/en-us/articles/201362683-Network-Firewall-or-Proxy-Server-Settings-for-Zoom

 

We allow our staff to use it with third parties only (so, people giving them training etc...), and after following that page it all works fine.

[DavR]

It's a CISCO ASA 5508-X. We're an LGfL school though, we don't control the firewall, we just fire off requests to their support team, who are as frustrated as we are about the whole thing.

 

Yes, as far as I know we've allowed everything on their support page. I was just wondering if anyone had any tips from their own experience, for instance, when we were doing packet captures we caught Zoom sending data to destinations other than those listed on the support page.....

Edited June 23, 2020 by DavR

[Davit2005]

Are you using it in same scenario as the users having the issue. i.e. Are you using VPN, RDP etc. Are your staff using the same connection methods when they have the issues?

 

Are the users using the app or web client?

Edited June 23, 2020 by Davit2005

[ITGURU]

Only issue i had was with filtering, had to whitelist the zoom urls but nothing required on external firewall

[DavR]

Are you using it in same scenario as the users having the issue. i.e. Are you using VPN, RDP etc. Are your staff using the same connection methods when they have the issues?

 

Are the users using the app or web client?

We've been using the iOS app, browser version and Chrome extension. I've tested all three OK, but users have found it hit and miss.