Irregular Expressions:

FreeBSD biba

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June 4, 2010  11:35 PM

Building a FreeBSD MAC Kernel – Part 3



Posted by: Dan O'Connor
biba, FreeBSD biba, freebsd kernel, freebsd MAC

The last command we ran with this was the

make installkernel KERNCONF=MAC
before I got completely off topic talking about the Biba integrity model. For the installation of the kernel that basically wraps it up, the installkernel command copied the new kernel to /boot/kernel and made...

May 21, 2010  12:51 PM

Biba explained – Part 5



Posted by: Dan O'Connor
biba, FreeBSD biba

This is where things can get confusing, learning how labels and the levels work was pretty easy.  The compartments work differently, here is an example.

process1        biba/50:5+6+7
process2        biba/50:5+6
process3        biba/50
Here we have three processes, all level...


May 21, 2010  12:37 PM

Biba explained – Part 4



Posted by: Dan O'Connor
biba, FreeBSD biba

In the last section we left off on compartments and labels.  I think we have explained what and how the label works with the files and processes in a system, compartments have a good chance at making your head hurt. Here is an example label with a compartment.

process    ...


May 21, 2010  12:26 PM

Biba explained – Part 3



Posted by: Dan O'Connor
biba, FreeBSD biba

Now we can put some context around biba running on a FreeBSD system and some things you could do with it. There is 65,535 levels that can be assigned to a process or file, with 3 special levels. low - It is lower than any other process. equal - It is equal it any other process, it's almost...


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