Forum Discussion
Azure ATP connection closed errors
you can work with a demo environment without any issues.
back to the log, you've some error with: the underlying connection was closed... and that means you've some issue with a connection from your local DC's to the AATP, it could be a connectivity issue, some SSL inspection or even firewall port.
from the tri logs, it looks like the sensor isn't stable and restarting, below a few points to check:
Make sure Azure ATP Prerequisites is
Did you saw outbound connection limit or network issues from DC's to AATP
Make sure your DC's are healthy and connected (on AATP console)
Do you've some SSL inspection or proxy to the internet?
To simulate an attack scenario with AATP, it will be better with two Windows client (one victim and one attacker).
Hi and thanks for your reply, I have checked all prerequisites.
1. server is helathy
2. No Sensor errors in ATP portal
3. Sensor is listed
I deleted the ATP instance and created one from scratch. however when I try to connect: https://m365x727487sensorapi.atp.azure.com/
Note: m365x727487 is the name of my demo tenannt, i get
HTTP Error 503. The service is unavailable.
After I have setup the instance, I can browser domain specific objects, so it looks like some information is flowing up correctly.