HTTP sensor send error HTTP/1.1 404, any idea what happen?

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Are you able to open the URL in a browser (on the same system as the Probe that runs the sensor)?

Kind regards,
Sasa Ignjatovic, Tech Support Team


Jun, 2021 - Permalink

Hi, yes , the URL open in probe server, port usage from url is: https://name.myfirewall:44435, can be problem a port not standard?


Jul, 2021 - Permalink

The sensor should still work. Did you enter the URL in the sensor including the port (so: https://name.myfirewall:44435)?

Kind regards,
Sasa Ignjatovic, Tech Support Team


Jul, 2021 - Permalink

I had the same problem. It seems like after a fortigate update, when acessing the URL "https:///Fortigate-Firewall/" there is a HTTP-Redirection and the PRTG Sensor does not follow the redirection, instead issuing a Error HTTP/1.1 404 Not Found.

The Workaround is to change the URL to "https://Fortigate-Firewall/login" then the sensor is OK again.


Sep, 2021 - Permalink