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bandwidth and ssl/tls traffic percentage?



I need to know exactly what the percentage of encrypted traffic is in regards to my overall bandwidth usage? Can this be done with PRTG? If so, on Fortinet and Sonicwall?


bandwidth prtg ssl

Created on Sep 30, 2019 8:07:56 PM

1 Reply



Hello Jacob,

Thank you for your post.

In PRTG you can get some degree of insight if you have devices capable of reporting traffic statics with the standard flow protocols. If you know on what ports your encrypted traffic passes thru, you can create filters in order to monitor these ports. For more information please see how to Monitoring Bandwidth via Flows. Please keep in mind that this will only go down as far as layer 4, so you will be able to discern the traffic based on it's port. But as soon as there's encrypted traffic (on port 443, which is fairly common) you won't be able to tell what sort of traffic it is. In most cases, proxies or firewalls can provide more detail since they decrypt/inspect the actual traffic for inspection.

Kind regards,
Sasa Ignjatovic, Tech Support Team

Created on Oct 1, 2019 9:40:25 AM by  Sasa Ignjatovic [Paessler Support]

Last change on Dec 2, 2021 10:24:45 AM by  Maike Guba [Paessler Support] (2,404) 2 1

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.