We have a few HTTP full webpage load sensors in our PRTG monitoring. All the full webpage load within our network work like a charm, but the sensors that monitor website that are not within our own network give the error: 407
When i configure the device in PRTG with a proxy and credentials for the proxy, and do the same in Internet Explorer on the server that runs PRTG it keeps giving this error.
How can i resolve this issue? I have the same problem with the Google Analytics sensors. Does this have anything to do with the firewall, if so what changes need to be made on the firewall to get this working.
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