Can't connect to to WebEx-Meeting using Audio (webconferencing)

Probably some certificate pinning taking place here. Have you tried recording SSL errors and adding them to a trusted app? (Settings>HTTPS>Manual Recording. Select your webex device, start recording. Connect to webex & audio. Check recordings and add all errors into a Trusted App).

Unfortunately today this process is for the more tech savvy people. We'll come up with a fix in the near future that will automate today's manual process. Stay tuned 😉 

Hi Karsten,

we use Webex in our Office. There in our webgateway (Clearswift) we do al lott of exceptions for Webex.

Tomorrow I can look for the List of domains and IPs to get it work.

Here are some domains 🙂 

"Webex Teams"
encryption.a8.ciscospark.com
mercury-connection-partition6.a6.ciscospark.com
teams.webex.com
ec.walkme.com
atlas-a.wbx2.com
cdn.walkme.com
apheleia-a.wbx2.com
atlas-a.wbx2.com
avatar-a.wbx2.com
avatar-prod-us-east-2.webexcontent.com
calendar-a.wbx2.com
cdn.appdynamics.com
conv-a.wbx2.com
files-api-a.wbx2.com
idbroker.webex.com
identity.webex.com
janus-a.wbx2.com
locus-a.wbx2.com
mercury-connection-partition6.a6.ciscospark.com
metrics-a.wbx2.com
people.webex.com
playerserver.walkme.com
raindrop-a.wbx2.com
u2c-a.wbx2.com
u2c.wbx2.com
wdm-a.wbx2.com
wdm.a8.ciscospark.com

Good luck, more tomorrow 🤠 

regards

PIO78

Hi,

thats all 🙂 

*.ciscospark.com

*.walkme.com

*.wbx2.com

*.webex.com

20.10.2020 some more information

if you an firewall open the following port from internal to the internet:

TCP 5004
TCP 5061

UDP 5004

here you can test connectivity:

https://mediatest.webex.com

result attached

regards

PIO78

@pio78 THX! Nice contribution 😃 😎

To be 100% clear: it‘s both lists joined together or just the last is enough?

@valentin How do you feel about adding a „webex“ trusted app to the repo until @mainzelM‘s automation is released?

Hi everyone,

the short list is enough ....

🙂

@valentin Is @pio78 s app definition for webex already checked in? (sorry for the dumb question but I‘m not on the developer level / github etc)

I guess webex is quite common in current time and the addition to our standard apps would be helpful for may users...

Thanks much!

@Benne @Pio78 Just returned from vacancy days this week, I created the pull request

Regards Valentin

Excellent!

Dear all, I currently still run into this problem: Webex Audio connection fails, unless I set eblocker on pause for my macbook. I added the Webex app to trusted apps, and all domains as listed earlier in these postings are added to the trusted domains for all Webex-associated applications. Nevertheless the audio connection fails. Any idea? Thanks in advance, andreas

@andreasr Maybe/probably Webex changed their infrastructure (used domains) meanwhile. I‘d try a manual recording next time you are using Webex.

Alternatively you maybe want to try enabling the Auto Trust App (Settings > HTTPS), which might fix this automatically. It usually takes a few re-trys (of webex) until ATA records & trusts the needed domains…

Please share the solution once you got it. 👍

THX!

@random Thanks for your advice. I already did the manual recording. No other than the already mentioned domains appeared. And the Auto Trust App is on. How long does ATA take to learn. Does it run locally, or does it wait for approval by the e-blocker team?

Best, andreas

@andreasr ATA works locally only and does pretty much what you manually do. It records HTTPS connections and analyses connection errors. If the domain causing the connection error does not match a tracker signature, the domain gets added as trusted. This process is quick but it might not catch all domains instantly. That's why you might need a few retries.

Unfortunately I'm not using Webex to check myself what's going on. The only advice I can give: Try the manual recording for some longer (also using audio) and set all the recorded domains as trusted.

THX!