represents a significant milestone in the Paessler AG monitoring roadmap. This release cycle focused heavily on modernizing the user interface, improving security protocols, and introducing architecture changes to prepare the software for future updates (such as the transition to PRTG 23).
Updates to SNMPv3 handling and SSH sensor credential storage to prevent local privilege escalation. Restructured User Interfaces
| Feature | PRTG 20.x | PRTG 21.0.x | |---------|-----------|--------------| | Max cluster nodes | 2 | 4 | | Auto-failover time | ~60 sec | ~30 sec | | Config sync method | Manual/Scheduled | Automatic delta sync |
Lookups transform raw numerical values returned by sensors into human-readable states (e.g., mapping an integer status code of 1 to OK , or 2 to Critical ). In 21.0.x, lookups are defined using structured XML files placed in the \lookups\custom directory. This allows administrators to customize color-coded alerting states for specific enterprise hardware platforms. prtg network monitor 21.0.x
: This version introduced significant updates for mobile monitoring, including support for channel gauge widgets alarm widgets
This paper was prepared for academic and technical evaluation purposes. Version specifics are accurate as of PRTG 21.0.66.0.
: Users can now select single bits of input and holding registers to monitor industrial devices more precisely, such as tracking the on/off status of multiple inputs reported as a single register. represents a significant milestone in the Paessler AG
Version 21.0.x expanded the library of native sensors. Significant focus was placed on:
Whether you are looking to upgrade or just getting started, here is a comprehensive look at what makes the 21.0.x series a cornerstone for modern sysadmins. 1. The Core Philosophy of 21.0.x
Even as newer versions emerge, the foundations of 21.0.x remain the industry standard: Restructured User Interfaces | Feature | PRTG 20
: Introduced a more efficient way to monitor AWS environments, specifically targeting cloud alarms and performance metrics. Enhanced Database Sensors
Better management of certificates for secure communication between the core server and remote probes.
Administrators looking to benefit from these improvements should upgrade to the of PRTG, where the new UI and API have matured and many additional sensors and features have been added. For those maintaining older 21.0.x installations, it is advisable to plan an upgrade to ensure continued security fixes and access to new capabilities.