Are the two private subnets in the screenshot the one network at the one location? Are you providing the internet? Do you have SIP ALG enabled? Do other devices have issues or are all issues isolated to Zoom phones?
On Wed, May 3, 2023 at 12:47 PM <dmmoff...@gmail.com> wrote: > Apparently Zoom tier1 isn’t helping. “Check your firewall settings” and > other basic stuff. I don’t know if they’re just script readers or if this > IT guy doesn’t know what to ask. > > > > I don’t want to be the guy who just points fingers at the other guy, so > I’m trying. I just wish I could capture the SIP messages….friggin TLS so > super secure that I can’t friggin help you. If only the world had no bad > people, then we wouldn’t need security. > > I want to hear Steve Jones’s plan for eliminating all the bad people. I > bet he has one. > > > > > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Darin Steffl > *Sent:* Wednesday, May 03, 2023 10:49 AM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* Re: [AFMUG] Yealink "Forbidden" > > > > This is really simple. If they can ping the internet or do anything else > that requires internet at the same time the phones show offline, it's not > your problem. They should be contacting their phone provider. > > > > Their voip provider can provide them host names to ping or trace to in > order to troubleshoot. If you don't sell the voip, you shouldn't be > troubleshooting it aside from making sure your network ping, jitter, and > packetloss are normal. > > > > On Wed, May 3, 2023, 8:13 AM <dmmoff...@gmail.com> wrote: > > I’m trying to help a customer with their Yealink phones. Their provider > is Zoom. > > I’m 99% sure this is not my problem, but I’m chronically too nice to > people so I’m helping anyway. > > > > So apparently when they go to dial out they’ll get a message on the screen > saying “Forbidden”. I’m not sure if there’s more to the message because I > only know what they’re telling me. When this starts happening their IT > guy says the phones show up as “offline” in whatever management portal > they’re using. They factory reset the phone, it reprovisions, shows up as > “online” in their portal and works again for some period of minutes or > hours and then does the same thing again. I asked if a simple reboot > works, but the IT guy says they factory reset instead of reboot because > it’s so easy to do 🙄. > > > > They point at me because the phone is “offline”, and they’re tying it to > network maintenance that was done on Monday morning, but their story is not > totally consistent about what day it started. May have been Monday, may > have been last week, depends who you ask. I’ve taken packet captures and I > can see the supposedly “offline” phone talking on port 443 to an AWS server > (I assume provisioning server) and talking to Zoom on port 5091. That’s > all TLS/SSL so I can’t see the messages, but they’re definitely still > talking to the mothership when they’re reported as “offline”. They also do > other normal stuff like DNS queries, NTP sync, and normal LAN chatter like > CDP, ARP, etc. I also checked for packet loss to the phones and there’s > none/negligible loss. So I’m telling these guys your phones are 100% > definitely *not* offline. I told them they need to check with Zoom to > see what application layer messages are happening, because due to the > encryption I don’t have a clue, but I’d wager the carrier is sending back a > 403 Forbidden for some reason. > > > > Below is a screenshot of his management tool (customer name blocked out). > I don’t recognize it, maybe one of you all does. > > In the meantime I’m wondering if the collective has seen something like > this with Yealink and/or Zoom. Any wild-ass guesses? > > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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