1 / 9

SoftwarePot: A Secure Software Circulation System

SoftwarePot: A Secure Software Circulation System. Yoshihiro OYAMA (Univ. of Tokyo / JST) Kazuhiko KATO (Univ. of Tsukuba / JST). SoftwarePot in a NutShell. Provides virtual environment “ Pot ” Pot has private namespace of resources Contains private file tree (like chroot jail)

rumer
Télécharger la présentation

SoftwarePot: A Secure Software Circulation System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. SoftwarePot: A Secure Software Circulation System Yoshihiro OYAMA (Univ. of Tokyo / JST) Kazuhiko KATO (Univ. of Tsukuba / JST)

  2. SoftwarePot in a NutShell • Provides virtual environment “Pot” • Pot has private namespace of resources • Contains private file tree (like chroot jail) • Virtual resource in pot can be mapped to real external resource • Snapshots of pots (pot files) are distributed as software packages • Like Zip files

  3. pot file user developer user user

  4. pot process process process remote machine security policy

  5. Installation/Uninstallation • Files in package are not extracted and installed into the original file system • Installation: downloading pot file • Uninstallation: deleting pot file • Execution:“stacking” resource views • Like UnionFS

  6. Security Policy • How to “plant” pot in real environment • How to control accesses map: /usr/local/lib /usr/local/lib /dev/null /dev/null /extern_world /home/oyama/shared_dir_for_pot … socket: allow connect *.u-tokyo.ac.jp 80 redirect 202.226.93.133 23 -> 130.158.85.97 10023

  7. Advantages • Reduced effort is required • for describing access control policies • Because accessible external resources are minimized • for preparing resources in virtual environment • Because they are distributed as pot files

  8. Implementation • User-level middleware • Syscall interception and sysarg modification • Linux: our kernel module • Solaris: procfs • One monitor process attached to each application process • Measured overhead: 6~21%

  9. Source Code Available Soon!

More Related