Apr 15 2018 01:04 PM
The document - Office 365 URLs and IP address ranges lists IP addresses used by the Skype for Business Service. Running the Skype for Business Network Assessment Tool fails on a range of addresses that are not mentioned in that document - is there an updated version of the tool available ?
Ian
Apr 15 2018 11:15 PM
SolutionHi @Ian Moran,
52.112.0.0/14 is listed on Office 365 URLs and IP address ranges. This range goes from 52.112.0.1 - 52.115.255.254 and includes the IP addresses you asked below (I used this subnet calculator).
hth,
thomas
Apr 15 2018 11:43 PM
Ah of course, thanks Thomas.
Apr 16 2018 12:05 AM
That same range is failing from several locations/tenants here in the UK where the firewalls have been configured to allow connections to all destinations on UDP 3478, 3479, 3480 & 3481
Everything appears to be working but on one site we were having intermittent issues with screen sharing
Apr 16 2018 02:43 AM
I can confirm that they are failing for me as well. I will follow up with the team.
Apr 16 2018 04:32 AM
@Ian Moran, thanks for reporting the issue, we are working to fix it.
Apr 17 2018 05:33 AM
@Ian Moran, thanks again for reporting. The issue should now be resolved and you should not see these errors anymore. I hope this did not cause too much inconvenience.
Apr 17 2018 05:38 AM - edited Apr 17 2018 05:49 AM
Excellent, thanks Thomas, can confirm the tool is now working as expected.
As to our specific issue with screen sharing this was down to the Fortigate firewalls using SSL inspection for the Skype packets. Fixed by creating a policy to ignore this for the destination networks mentioned in the document referenced in this discussion.
Oct 01 2018 07:30 AM
Hi @Thomas Binder,
I have the same problem with the IP addresses and blocked connections in Microsoft Teams.
I can not follow your answer, If i check the ip calculator I see not the range 52.112.0.1 - 52.115.255.254
Maybe you can tell me more details about the ip range.
regards,
Martin
Oct 02 2018 02:30 AM
@Martin Alter, which IP address do you see blocked or not listed?
Oct 02 2018 02:44 AM
@Thomas Binder I see some IPs from range 52.114.*.*.
Oct 02 2018 04:35 AM
Oct 02 2018 05:33 AM
Apr 29 2020 06:49 PM
@Thomas Binder Hi Thomas. Can you share about this issue for us? We still have the same problem when use Network Testing Companion Tools.
Apr 29 2020 06:55 PM
Apr 15 2018 11:15 PM
SolutionHi @Ian Moran,
52.112.0.0/14 is listed on Office 365 URLs and IP address ranges. This range goes from 52.112.0.1 - 52.115.255.254 and includes the IP addresses you asked below (I used this subnet calculator).
hth,
thomas