Security compliance is critical. Version 21.0.x deprecated SSL 3.0 and TLS 1.0 entirely by default. It introduced:
PRTG Network Monitor 21.0.x is the immediate successor to the version 20.x series. While version increments often imply simple bug fixes, the 21.0.x series introduced substantial backend improvements and interface refinements that bridged the gap between legacy desktop applications and modern, web-first management. prtg network monitor 21.0.x
