<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: SSL Certificate Warning

If you use PRTG outside your internal LAN, especially when you use it on the internet, you should switch the internal web server to use SSL. After doing so, your browser shows a certificate warning because the certificate that comes with PRTG cannot be signed by a valid authority. Anyway, the connection to your PRTG web server is secured via SSL, and you can confirm the claimed security risk. For more information on secure browser connections, please see the More section below.

Every browser shows the certificate warning in a different layout. The steps to take are similar for every browser, yet different in detail:

You can avoid these browser warnings by using your own trusted SSL certificate with PRTG. For this purpose we provide the freeware tool PRTG Certificate Importer.

Google Chrome

In Google Chrome, click on Advanced and then on Proceed to [yourPRTGserver] (unsafe) every time you call the PRTG web interface.

Security Warning in Google Chrome Browser

Security Warning in Google Chrome Browser

Mozilla Firefox

In Mozilla Firefox, click on I Understand the Risks and then on the Add Exception... button. In the appearing window, leave the check mark for Permanently store this exception and finally click on the Confirm Security Exception button.

Security Warning in Mozilla Firefox

Security Warning in Mozilla Firefox

You only have to go through this procedure once for every Firefox browser and PRTG core server.

Internet Explorer

In Internet Explorer, click on Continue to this website (not recommended) every time you call the web interface.

Security Warning in Internet Explorer

Security Warning in Internet Explorer


For other browsers that are not officially supported, the procedures to confirm the certificate are similar to the ones described above.


Freeware Network Tools: PRTG Certificate Importer—Installing Trusted SSL Certificates for PRTG Network Monitor

Knowledge Base: Why don't I get an SSL connection to the PRTG web interface?

Knowledge Base: Why can't I save my PRTG password in Google Chrome?

Knowledge Base: How can I stop Google Chrome showing me a "connection not private" message?