Debian Multimedia and SE Linux

I have just had a need to install packages from to correctly play .3gp files from my mobile phone (the stock Mplayer in Debian would not play the sound).

As part of getting this to work in a way that I like I rebuilt some packages so that shared objects would not demand an […]

Per-process Namespaces – pam-namespace

Mike writes about his work in using namespaces on Linux [1]. In 2006 I presented a paper titled “Polyinstantiation of directories in an SE Linux system” about this at the SAGE-AU conference [2].

Newer versions of the code in question has been included in Debian/Lenny. So if you want to use namespaces for a login […]

Getting Started with Amazon EC2

The first thing you need to do to get started using the Amazon Elastic Compute Cloud (EC2) [1] is to install the tools to manage the service. The service is run in a client-server manner. You install the client software on your PC to manage the EC2 services that you use.

There are the AMI […]

DKIM and Mailing Lists

Currently we have a problem with the Debian list server and Gmail. Gmail signs all mail that it sends with both DKIM and DomainKeys (DomainKeys has been obsoleted by DKIM so most mail servers implement only one of the two standards although apart from space there is no reason not to use both). The Debian […]

An Update on DKIM Signing and SE Linux Policy

In my previous post about DKIM [1] I forgot to mention one critical item, how to get Postfix to actually talk to the DKIM milter. This wasn’t a bad thing because it turned out that I hadn’t got it right.

I had configured the DKIM milter on the same line as the milters for ClamAV […]

Play Machine Update

My Play Machine [1] was offline for most of the past 48 hours (it’s up again now). I have upgraded the hardware for the Dom0 used to run it so that it now has the ability to run more DomU’s. I can now run at least 5 DomUs while previously I could only run 3. […]

SE Linux in Lenny status – Achieved Level 1

I previously described the goals for SE Linux development in Lenny and assigned numbers to the levels of support [1]. I have just uploaded a new policy to unstable which I hope to get in Lenny that will solve all the major issues for level 1 of support (default configuration with the unconfined_t domain for […]

Ownership of the Local SE Linux Policy

A large part of the disagreement about the way to manage the policy seems to be based on who will be the primary “owner” of the policy on the machine. This isn’t a problem that only applies to SE Linux, the same issue applies for various types of configuration files and scripts throughout the process […]

SE Linux Policy Packaging for a Distribution

Caleb Case (Ubuntu contributer and Tresys employee) has written about the benefits of using separate packages for SE Linux policy modules [1].

Firstly I think it’s useful to consider some other large packages that could be split into multiple packages. The first example that springs to mind is coreutils which used to be textutils, shellutils, […]

Lenny SE Linux on the Desktop

I have been asked about the current status of Lenny SE Linux on the Desktop.

The first thing to consider is the combinations of policies and configurations. I will number them if only for the purpose of this post, if the numbering is considered generally helpful it could be more widely adopted to describe configurations.