[Pki-devel] Some recent systemd security features ( tunable in unit-files)

[Nathan Kinder]

On 01/19/2012 09:33 PM, Kashyap Chamarthy wrote:
> Hi,
>
> Just came across this blog post from Lennart Poettering on security features in systemd,
> which seem to be relatively easy to use by configuring a directive in systemd unit files.
> Wondering, if we can use any of these for dogtag systemd unit files.
>
> http://0pointer.de/blog/projects/security.html
>
> Quick notes from the above long post:
>
> - Isolating services from the network
> 	+ A service and all its processes can be disconnected via n/w (I guess this won't be much
> helpful in our case as dogtag operates mostly over network)
> - Service-private /tmp
> 	+ An isolated private /tmp from host system's /tmp
> - Making directories appear read-only or inaccessible to services
> - Taking away capabilities from services
> 	+ Ability to limit kernel capabilities to services
> - Disallowing forking, limiting file creation for services
> - Controlling device node access of services
> 	+ Ex: Like allowing access to  a specific device (like/dev/null, and only to this device)
There seem to be some interesting things here.  There is some overlap 
with SELinux in a number of these areas, though it may still be worth 
additionally locking things down at the systemd level as well.
>
>
>