nt: Friday, July 17, 2020 5:00 PM
To: Lyden, John C
Cc: nanog@nanog.org
Subject: [EXTERNAL] Re: Wifi Calling Firewall Holes to Punch
In our university environment, wifi calling works just fine over NAT and we
have not made any inbound port exceptions in the firewall for it. The critical
piec
ro, NJ 08028
rowan.edu/irt<http://rowan.edu/irt>
From: Alex Buie
Sent: Friday, July 17, 2020 12:59 PM
To: Lyden, John C
Cc: nanog@nanog.org
Subject: [EXTERNAL] Re: Wifi Calling Firewall Holes to Punch
It's been a minute since I've set this up in a corp/campus wif
Also do wifi calls from Android phone on VZW behind NAT, with no issues. I do
have a "network extender" which has GPS link and ethernet (also behind NAT) and
it does give me 5 bars around the house (up to 70mbps ish of download over
LTE).
Now, your NAT setup could possibly interefere? In my
In our university environment, wifi calling works just fine over NAT and
we have not made any inbound port exceptions in the firewall for it. The
critical piece for (non-enterprise) VoIP traffic is that your firewall must
not try to function as a SIP ALG, but I'm not sure that's directly relevant
On 17/Jul/20 22:09, Josh Luthman wrote:
> I do dozens of VZW WiFi calls a day. My phone is behind NAT, no problem.
>
> It's probably 50/50 where the call starts on WiFi vs switches to WiFi
> after ~3 seconds from the poor VZW signal.
Same here, one of my cell operators uses VoWiFi for their
I do dozens of VZW WiFi calls a day. My phone is behind NAT, no problem.
It's probably 50/50 where the call starts on WiFi vs switches to WiFi after
~3 seconds from the poor VZW signal.
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On Fri, Jul
It's been a minute since I've set this up in a corp/campus wifi scenario,
but my notes for Verizon VoWiFi from the last time I did say that you need
outbound udp/500 and udp/4500 IPSec protocol (IKE and ESP) permitted out
the firewall. Tunnel endpoints live in 141.207.0.0/16, so hopefully that
Hey gang.
We're setting up a unified wireless network for the students here, and to get
around the issues with Nintendo and NAT we devoted a large chunk of public IP
space to them.
We're aware that this is causing issues with wifi calling on Verizon, TMo etc
because it appears they initiate
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