PRTG Manual: SSL Certificate Warning
If you use PRTG on premises outside your internal LAN, in particular if you use it on the internet, you should switch the internal web server to use SSL. Your browser then shows a certificate warning because PRTG comes with a self-signed certificate. Anyway, the connection to your PRTG web server is secured via Secure Sockets Layer (SSL), and you can confirm the claimed security risk.
Every browser shows a slightly different certificate warning. The necessary steps are similar for every browser, with a few small differences:
In Google Chrome, click Advanced, then Proceed to [yourPRTGserver] (unsafe) every time you call the PRTG web interface.
In Mozilla Firefox, click Advanced, then click the Accept the Risk and Continue button.
You only have to go through this procedure once for every Firefox browser and PRTG core server.
In Internet Explorer, click Go on to the webpage (not recommended) every time you call the PRTG web interface.
For other, not officially supported browsers, the procedure is similar.
Why can't I save my PRTG password in Google Chrome?
PRTG Certificate Importer
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