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Janos A Java-oriented Active Network Operating System

Janos A Java-oriented Active Network Operating System. Jay Lepreau, Patrick Tullmann, Kristin Wright Wilson Hsieh, Godmar Back, many more... University of Utah Flux Research Group www.cs.utah.edu/flux/ April 16, 1999. What is Janos?.

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Janos A Java-oriented Active Network Operating System

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  1. JanosA Java-oriented Active NetworkOperating System Jay Lepreau, Patrick Tullmann, Kristin Wright Wilson Hsieh, Godmar Back, many more... University of Utah Flux Research Group www.cs.utah.edu/flux/ April 16, 1999

  2. What is Janos? • Single-address space OS, with some but not much hardware memory protection • Contains a JVM • Primary target application code is Java byte code • Can also run Posix-like apps

  3. Our Primary Hard Problem Availability: Resource Management and Control

  4. Other Hard Problems • Information security • Performance • Tech transfer

  5. Approach • Custom JVM providing inter-AA (inter-applet, inter-servlet) isolation within the same JVM • Add a policy-free strong security architecture that NSA, SCC, and we developed in another OS. • Underneath is a highly-modular “embedded” OS • Produce separately useful OS, security, and Java VM components.

  6. Claim: Broad Relevance Our custom JVM, and probably the accompanying security architecture implementation, can run wherever JVM’s run today.

  7. Resource Control • Leverage experience providing resource control in more traditional OS’es. • Apply user/kernel mode boundary to a type-safe environment (Java) • Obvious resources: Cycles / Bandwidth / Memory • Other resources: Caching store, persistent store, specialized hardware, specialized data • Admission control, prevent denial of service, fair sharing, perhaps latency constraints, early accounting

  8. Janos Structure Active Protocols ANTS-5 EE Custom Java VM The OSKit++ Hardware

  9. Janos Structure Active Protocols ANTS-5 EE Custom Java VM The OSKit++ Hardware

  10. Janos Structure Active Protocols ANTS-5 EE Custom Java VM The OSKit++ Sec. Policy Engine Hardware

  11. Other Java EE Non-Java EE Janos Structure Active Protocols ANTS-5 EE Custom Java VM ANETD The OSKit++ Sec. Policy Engine Hardware

  12. Active Protocols ANTS-5 EE Other Java EE Custom Java VM Non-Java EE ANETD The OSKit++ Sec. Policy Engine UNIX Hardware

  13. Possible Curves in the Road • Neither prototype JVM OS model is the right one • Hardware protection may be included • Flask security architecture may not map well to Java and Janos • Challenges in GC and cpu interactions. • More surprises undoubtedly await…

  14. Done: Prototype of JVM with strong OS process model Prototype of JVM with resource controls for memory,cycles, GC Partially modified ANTS to allow resource control To Do: Eval and unify aspects of prototypes New OSKit modules Security components Modular and optimized network access Crypto, secure boot, … Checks in enforcers Performance, performance 9/99: Team3, support PANDA and Ninja Status

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