Mandatory Access Control (MAC) with SELinux
SELinux is a vey useful security extension. Once it is activated, SELinux runs more or less transparently in the background, monitoring the running system – as long as the distributor has paved the way by providing a policy worthy of that title. As of this writing, Fedora is the leading distribution in this respect.
Recent releases have improved the usability of SELinux; for example, the SELinux logs are easier to read than before with the setroubleshootd tool. Even inexperienced users can develop their own policy modules to place new programs under the protective shield of SELinux, with a little help from the graphical front end, system-config-selinux.
- NSA SELinux website: http://www.nsa.gov/selinux
- Reussell Coker's SELinux Debian play machines: http://www.coker.com.au/selinux/play.html
- Dan Walsh, Creating a Kiosk Account: http://danwalsh.livejournal.com/13376
- "A Step-By-Step Guide to Building a New Policy Module", by Dan Walsh, Red Hat Magazine, August 2007: http://redhatmagazine.com/2007/08/21/a-step-by-step-guide-to-building-a-new-selinux-policy-module.html
Buy this article as PDF
New flaw in an old encryption scheme leaves the experts scrambling to disable SSL 3
Lennart Poettering wants to change the way Linux developers talk to each other.
Enterprise giant frees itself from ink and home PCs (and visa versa).
Mozilla’s product think tank sinks silently into history.
TODO group will focus on open source tools in large-scale environments.
New tool will look like GParted but support a wider range of storage technologies.
New public key pinning feature will help prevent man-in-the-middle attacks.
Carnegie Mellon researchers say 3 million pages could fall down the phishing hole in the next year.
The US government rolls new best-practice rules for protecting SSH.