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Lukas Vrabec

Blogs from SELinux world!

Category: Uncategorized

April 25, 2020September 4, 2021 lvrabec

Multiple SELinux modules installed on system. Why?

Uncategorized

In current Fedora 32 Beta, if you have freeipa-server package present on your system, you can see that SELinux module “ipa” is enabled twice. You can check it using semodule command.

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February 9, 2020September 4, 2021 lvrabec

Udica & SELinux talks on Devconf.cz and Fosdem 2020

Conferences, Uncategorized

Hi All, January and February are always connected with two great open-source conferences in Europe. First, is Devconf.cz based in Brno Czechia and the second

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September 29, 2019September 4, 2021 lvrabec

How to prove that operation is allowed in SELinux policy?

Uncategorized

Last week colleague of mine asked, how to prove that some operation is allowed in installed SELinux policy? This could be useful when you’re troubleshooting

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June 16, 2019November 18, 2021 lvrabec

Distinguish sysadm and secadm roles

Uncategorized

Today, I would like to focus on more advance feature in SELinux technology which are confined users. I wrote several posts where I described how

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May 12, 2019October 31, 2021 lvrabec

Use udica to build SELinux policy for containers

Uncategorized

Last week article about the udica was published on fedoramagazine.Go and see how easily SELinux policy could be generated for containers! We also collects use

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April 19, 2019September 14, 2021 lvrabec

Red Hat Brno Open House 2019

Uncategorized

Hi All, We had Open House Brno 2019 and our team Platform Security had talk on this event. Slides are available here, demos are here.

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March 18, 2017September 22, 2021 lvrabec

Using rpm macros in product SELinux subpackages

Uncategorized

Some time ago, I published a post about shipping custom SELinux modules together with product as rpm subpackage. One of the steps  in shipping custom

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March 18, 2017November 19, 2021 lvrabec

Shipping custom module using SELinux priorities

Uncategorized

Hello everyone! Some time ago I introduced first part of shipping own custom module with rpm package of your application. This solution allows you to

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August 17, 2016November 19, 2021 lvrabec

How to modify SELinux module from distro policy?

Uncategorized

Hi! Today, I’ll show you how to modify SELinux module from distro policy without rebuilding whole selinux-policy rpm package. This can be useful during testing

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July 21, 2016November 19, 2021 lvrabec

See you on Flock2016!

Uncategorized

Hello SELinux enthusiasts! On Flock conference, me and Mirek Grepl will talk about shipping own SELinux modules for your service and show you SELinux power

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About Me


Lukas Vrabec Photo
Lukas Vrabec is a product owner & SELinux technology evangelist at Red Hat. He is leading SELinux and Security Special Projects engineering teams. Lukas is a long-term Fedora contributor and Red Hat Enterprise Linux developer. He is the author of udica, the tool for generating custom SELinux profiles for containers.

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