Patched: Prtg Network Monitor 21.0.x

PRTG Network Monitor 21.0.x, released by Paessler in 2021, represented a significant shift in how sysadmins handle "edge case" monitoring—moving beyond standard server pings to more nuanced environmental and software-specific data. Key Features & Evolution

NTLM Deprecation:

21.x versions began the transition toward Kerberos authentication for WMI sensors , responding to Microsoft's push to phase out older NTLM protocols. Why This Version Mattered prtg network monitor 21.0.x

• Collection cadence: configurable sensor intervals (minimum 30s for supported types; note sensors that allow 10s polling only where safe).
• Storage: time-series storage for monitoring data with configurable retention tiers (raw, 1-min, hourly/daily rollups).
• Retention policy: configurable retention periods per group; default retention: raw data 7 days, 1-min rollup 30 days, hourly 365 days.
• Storage format & limits: define on-disk DB or proprietary file store, maximum file sizes, compaction behavior, and backup procedures.

• Web UI: responsive modern interface with dashboards, maps, device lists, and customizable widgets.
• Dashboards: multi-tenant dashboards with filterable views, real-time charts, and embedded reports.
• Maps & Visualization: drag-and-drop maps with device status icons and link attributes.
• Reports: scheduled and on-demand PDF/CSV/HTML reports for SLA, uptime, capacity, and inventory.

Deprecation of Legacy Technologies