Systrace Policy Library

While reading Michael Lucas' excellent Absolute OpenBSD, I learned of a project which maintains a library of Systrace policies called the Hairy Eyeball Project. Systrace allows administrators to define which system calls their applications can execute. Systrace is included in OpenBSD and ports exist for other operating systems. I most interested in the FreeBSD version which Rich Murphey presented at DefCon XI. I haven't seen anything from DefCon XI posted in the site's archives yet.

While perusing the mailing lists I discovered CerbNG which appears to have similar functionality to Systrace. I think projects like this are key to improving security. Boundaries between the untrusted "outside world" and the trusted "inside world" are dissolving. Road warriors infected with the latest worm use their VPN to connect to the corporate network, bypassing defenses aimed at exterior threats. Increasingly hosts must defend themselves as access control is becoming difficult if not impossible. Organizations are unwilling or unable to segment their networks, as most can't even define the relative importance of their business assets. The future of security is every machine being a bastion host.

If you need a commercial solution, Primary Response from Sana Security "monitors and protects applications at the OS kernel level, building a profile of the application's normal behavior based on the code paths of a running program, then continually monitoring those code paths for deviations from the norm."

Comments

Post a Comment

Popular posts from this blog

Zeek in Action Videos

Image
This is a quick note to point blog readers to my Zeek in Action YouTube video series for the Zeek network security monitoring project .  Each video addresses a topic that I think might be of interest to people trying to understand their network using Zeek and adjacent tools and approaches, like Suricata, Wireshark, and so on.  I am especially pleased with Video 6 on monitoring wireless networks . It took me several weeks to research material for this video. I had to buy new hardware and experiment with a Linux distro that I had not used before -- Parrot .  Please like and subscribe, and let me know if there is a topic you think might make a good video.
Read more

MITRE ATT&CK Tactics Are Not Tactics

Image
Just what are "tactics"? Introduction MITRE ATT&CK  is a great resource, but something about it has bothered me since I first heard about it several years ago. It's a minor point, but I wanted to document it in case it confuses anyone else. The MITRE ATT&CK Design and Philosophy document from March 2020 says the following: At a high-level, ATT&CK is a behavioral model that consists of the following core components: • Tactics, denoting short-term, tactical adversary goals during an attack; • Techniques, describing the means by which adversaries achieve tactical goals; • Sub-techniques, describing more specific means by which adversaries achieve tactical goals at a lower level than techniques; and • Documented adversary usage of techniques, their procedures, and other metadata. My concern is with MITRE's definition of "tactics" as "short-term, tactical adversary goals during an attack," which is oddly recursive. The key word in the tacti...
Read more

New Book! The Best of TaoSecurity Blog, Volume 4

Image
  I've completed the TaoSecurity Blog book series . The new book is  The Best of TaoSecurity Blog, Volume 4: Beyond the Blog with Articles, Testimony, and Scholarship .  It's available now for Kindle , and I'm working on the print edition.  I'm running a 50% off promo on Volumes 1-3 on Kindle through midnight 20 April. Take advantage before the prices go back up. I described the new title thus: Go beyond TaoSecurity Blog with this new volume from author Richard Bejtlich. In the first three volumes of the series, Mr. Bejtlich selected and republished the very best entries from 18 years of writing and over 18 million blog views, along with commentaries and additional material.  In this title, Mr. Bejtlich collects material that has not been published elsewhere, including articles that are no longer available or are stored in assorted digital or physical archives. Volume 4 offers early white papers that Mr. Bejtlich wrote as a network defender, either for technica...
Read more