In this video Kevin Dankwardt describes the use of SELinux. The discussion includes temporarily and permanently setting SELinux type contexts. We set and restore SELinux contexts. We use semanage and chcon commands and look at the config files that are ch
- [Instructor] SELinux File Contexts.…So associated with files, when you're using SELinux,…is the context that the kernel uses,…to check for permissions.…You can see the context,…with the capital Z, or capital Zed, option, the LS.…The way it works in the kernel is,…it checks regular permissions,…the typical read/write/execute sort of stuff.…And it checks extra stuff, based on these contexts.…So this is going on in the kernel, in fact,…pretty much every system call on the kernel,…has a hook in it, to do extra checks.…
So one of the great benefits of this,…is a service, like a web server,…can check the context on a file,…or a kernel can enforce that,…to prevent the web server from serving files…it's not supposed to serve, for example.…So if someone, say, tried to get your web server…to serve up your password file,…it wouldn't be able to do it,…because of these sort of checks.…So, you sometimes need to adjust these,…so that, for example, this web server can serve up a page.…
If you just copy some file over there,…it might not be able to serve it up.…
- Partitioning storage
- Creating, mounting, and unmounting file systems
- Formatting file systems
- Making volumes with LVM
- Adding storage security
- Managing swap spaces
- Backing up and recovering Linux storage systems
- Working with networked file systems like NFS and SSHFS
Skill Level Intermediate
Linux: Bash Shell and Scriptswith Kevin Dankwardt2h 46m Intermediate
Linux: Multitasking at the Command Linewith Scott Simpson39m 1s Intermediate
1. Disk Partitions, Formatting, and Mounting
2. Logical Volume Manager (LVM)
3. Security and Resource Constraints
4. Special Storage Features and Considerations
5. Networked File Systems
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