1.1 Who needs that
2. Principles
2.1 Non reversible isolation
2.2 Isolation areas
2.3 New system calls
2.4 Limiting super-user: The capabilities system
2.5 Enhancing the capability system
2.6 Playing with the new system calls
2.6.1 Playing with /usr/sbin/chcontext
2.6.2 Playing with /usr/sbin/chcontext as root
2.6.3 Playing with /usr/sbin/chbind
2.6.4 Playing with /usr/sbin/reducecap
2.7 Unification
3. Applications
3.1 Virtual server
3.2 Per user fire-wall
3.3 Secure server/Intrusion detection
3.4 Fail over servers
4. Installation
4.1 The packages
4.2 Setting a virtual server
4.3 Basic configuration of the virtual server
4.4 Entering the virtual server
4.5 Configuring the services
4.6 Starting/Stopping the virtual server
4.7 Starting/Stopping all the virtual servers
4.8 Restarting a virtual server from inside
4.9 Executing tasks at vserver start/stop time
4.10 Issues
4.11 How real is it ?
5. Features
6. Future directions
6.1 User controlled security box
6.2 Kernel enhancements
6.2.1 Per context disk quota
6.2.2 Global limits
6.2.3 Scheduler
6.2.4 Security issues
6.2.4.1 /dev/random
6.2.4.2 /dev/pts
6.2.4.3 Network devices
7. Alternative technologies
7.1 Virtual machines
7.2 Partitioning
7.3 Limitation of those technologies
8. Conclusion
9. Download
10. References
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Linux computers are getting faster every day. So we should
probably end up with less, more powerful servers. Instead
we are seeing more and more servers. While there are
many reasons for this trend (more services offered), the
major issue is more related to security and administrative
concerns.
Is it possible to split a Linux server into virtual ones with as much isolation as possible between each one, looking like real servers, yet sharing some common tasks (monitoring, backup, ups, hardware configuration, ...) ? We think so ... |
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