Re: Google Classroom Video not making it through firewall

On 3/29/2022 2:12 PM, Harold Scheunemann wrote:
> Hello,
> 
> My name is Harold. I use a dedicated PC to provide IP Forwarding, DHCPD 
> and Firewall services for my home. All communications with the outside 
> world go through this PC. Lets call this PC#1. PC#1 has Slackware 14.2 
> x64 installed on it with all of the latest updates. I have a second PC, 
> identical hardware as PC#1, that has Slackware 15.0 x64 installed on it 
> again with all of the latest updates. Lets call this PC#2.
> 
> My child uses Google Classroom to participate in on-line school. With 
> PC#1 connected to my network, normal two-way video and audio 
> communications between the teacher and my child are possible. When I 
> replace PC#1 with PC#2, the video that is generated locally does not 
> make it to the teacher. The teacher sees a blank screen. My child is 
> able to see video received from the teacher. Audio continues to behave 
> normally, that is the teacher and my child are able to communicate 
> verbally.
> 
> For PC#1 and PC#2 I am able to use identical initialization scripts, 
> except for rc.inet1.conf which has updated formatting on PC#2. For the 
> Firewall services, I utilize Shorewall with the same scripts for both PC's.
> 
> FaceTime between a couple of ipads works just fine.
> 
> I've provided shorewall dumps for both PC's. If I could get some insight 
> as to how to log the interaction that is not working, I would greatly 
> appreciate it.
> 
> Thank you for your time!
> 

The only thing that I can help you with is to isolate if this is a 
Shorewall issue.

If you do 'shorewall clear' on PC number two, does it work properly?

-- 
Matt Darfeuille <[email protected]>
Community: https://sourceforge.net/p/shorewall/mailman/message/37107049/
SPC: https://sourceforge.net/p/shorewall/mailman/message/36596609/
Homepage: https://shorewall.org