Janos: a Java-oriented OS for active network nodes

Janos is an operating system (OS) for active network nodes whose primary focus is strong resource management and control of untrusted active applications written in Java. Janos includes the three major components of a Java-based active network operating system: the low-level NodeOS, a resource-aware Java virtual machine, and an active network protocol execution environment. Each of these components is separately usable. This article lays out the Janos design and its rationale.