This document helps to check the connectivity to the domain proxy and cnMaestro cloud via the external proxy.
Due to the instability of the cnMaestro on-premise proxy mentioned in the Field Service Bulletin we advise using external HTTP proxy or no http proxy.
When the external proxy is set up, you can test the connectivity of the proxy using a couple of CURL commands.
This will avoid breaking the CBRS operation by testing the connectivity before making changes to the on-premise configuration.
These commands can be run from the command prompt of a computer connected in the same networks as the HTTP proxy:
The first command is to check the connectivity with the cnMaestro cloud:
curl -IiS --proxy X.X.X.X:YYYY https://cloud.cambiumnetworks.com
The X can be replaced by the proxy IP address and Y with the proxy port number.
e.g.: curl -IiS --proxy 10.110.209.67:3128 https://cloud.cambiumnetworks.com
The second command is to check the connectivity of the domain proxy:
curl -IiS --proxy X.X.X.X:YYYY https://sas.cbrs.cambiumnetworks.com
The X can be replaced by the proxy IP address and Y with the proxy port number.
e.g.: curl -IiS --proxy 10.110.209.67:3128 https://sas.cbrs.cambiumnetworks.com
This test helps to confirm that your ACL’s are set up correctly as mentioned in the post below:
The commands will return only the HTTP header of the requested URL.
The domain proxy page will return a 403 error as there is no page present at that URL.
However, the 403 confirms a connectivity response from the domain proxy.