What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general.

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags

View all Tags

TLSv1.0 From Remote Probe Help



One of our remote probes is attempting to do the TLS handshake with TLSv1.0 instead of TLSv1.2 like our other probes so it cannot connect to the core server (on TCP 23560). I am guessing it is something on the Remote Probe Windows 2012 R2 host OS but I am not sure what to change to force the probe to use TLSv1.2. Thanks in advance

port-23560 probe tls

Created on Feb 1, 2019 7:05:24 PM

1 Reply



Hi Chris,

On the probe's end there are usually no settings for this, at least not as far as the remote probe configuration is concerned. Make sure you have it configured properly on the PRTG server's end, you do so in Setup | System Administration | Core & Probes | Probe Connection Settings | Connection Security and set it to "High Security". That way the core server will accept only TLS1.2 connections from the probes.

Kind regards,


Created on Feb 4, 2019 1:13:01 PM by  Erhard Mikulik [Paessler Support]

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.