This article applies as of PRTG 26.1.118


As of PRTG 26.1.118, PRTG includes an integrated NATS server that provides enhanced security and authentication for multi-platform probe connections. If you selected Overwrite Configuration during the PRTG setup, the installation setup program resets your existing multi-platform probe configurations, and you must manually reconfigure your multi-platform probes to connect to PRTG again.


This article guides you through the process of reconfiguring your multi-platform probes to use the integrated NATS server with NKey authentication.


Configure the NATS server

  1. Open the PRTG Administration Tool on your PRTG core server.
  2. Go to the NATS Server tab.
  3. In the FQDN field, enter a valid fully qualified domain name (FQDN) to which your multi-platform probe can connect.
  4. Configure the Transport Layer Security (TLS) certificate:
    • If you do not have a valid TLS certificate, click Generate TLS Certificate to generate a new self-signed TLS certificate that is valid for the FQDN that you entered.
    • If you already have a usable TLS certificate that is valid for the FQDN you entered and that is stored in the Windows certificate store LocalMachine\My\, enter the thumbprint of your CA certificate in the Certificate Thumbprint field.
  5. Click Save and restart PRTG and the integrated NATS server.


Enable the integrated NATS server in PRTG

  1. In the PRTG web interface, go to Setup | System Administration | Core & Probes.
  2. In the Multi-Platform Probe Connection Settings section, enable the Integrated NATS setting.
  3. Click Save.


Reconfigure your multi-platform probe

  1. On your multi-platform probe system, download and install the latest version of the multi-platform probe with support for the integrated NATS server authentication.
  2. After the installation completes, the installer displays instructions. Follow these instructions.
  3. Run the prtgmpprobe config wizard.
  4. When prompted, select NKey Auth as the authentication method.
  5. Follow the prompts and complete the wizard.
  6. When the wizard completes, it displays the NATS access identifier. Note down this identifier, as you need it in the next step.


Add the access identifier in PRTG

  1. In the PRTG web interface, go to Setup | System Administration | Core & Probes.
  2. In the Multi-Platform Probe Connection Settings section, locate the NATS Access Identifier field.
  3. Enter the NATS access identifier that you noted in the previous step.
  4. Click Save.
  5. On your multi-platform probe system, start or restart the multi-platform probe service to apply the new settings.

Your multi-platform probe is now reconfigured to connect to PRTG via the integrated NATS server.