You can't really depend on 220.127.116.11 not changing. Our system redundancy typically will not trigger a change during a failover incident, but there are certainly scenarios where the service may have to be recovered to an entirely different IP address allocation.
In addition, we do periodically migrate sites as we add portal locations. This is typically done when a new location is activated in our system that is topologically closer to the partner. Improving network proximity can significantly improve performance, especially with the remote connection facility.
It appears you are located in Australia, and as it happens we anticpate such a migration for Australian sites, altough I don't believe this has been scheduled yet.
There are also other addresses the appliance may need to access, although it will do so rarely. When the device does a factory reset, it will access our failsafe server. It also accesses a server periodically to check for certificate updates.
The recommended path is to set the ON100 to a static IP address (which can be done via web tunnel to the ON100 via the portal even after activation), and to whitelist the ON100's static IP address inside the customer's firewall - or at least for the required ports. See this thread for a listing of the ports that must be allowed to initiate outward traffic from the ON100 agent:
The ports are also listed in the OnPlus User Guide and also the Installation Guide, which you can find in the Documents tab at the top of this OnPlus Service community discussions page. You can also access this document via logging into the OnPlus portal and clicking Documentation at the top right (search for 14931).
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