Paranoid Penguin - Security Features in Debian 3.1

Debian gives you every security feature you need and more, but using these tools can be a daunting task.
Debian's Stability

I'd be remiss if I didn't at least briefly discuss one of my favorite characteristics of Debian, and the main reason I'm running it on my new Web server—Debian's relatively glacial release schedule. On the one hand, the delay in releasing Debian 3.1 (three years, or 21 dog/computer years after 3.0) was a bit extreme, and the Debian team has pledged a more predictable release cycle, probably one year from now on. But it's also true that stability enhances security.

Put another way, if you use Debian to run the latest desktop applications, or other things that depend on the very latest hardware drivers, you may be happier with the Debian variant Ubuntu, which has a predictable and short (six-month) release cycle. If, however, you want to build an appliance system that chugs along in a corner, requiring little ongoing maintenance other than regular security patches, Debian's longer release cycle is positively luxurious. In many situations, it's preferable to run somewhat-outdated but fully security-patched applications than it is to have to upgrade the entire operating system every six months (or sooner). I admit, however, that I am among the world's laziest system administrators!

Conclusion

Like UNIX itself, Debian provides the security-minded user with maximal power, flexibility and variety of tools, at the cost of complexity. Debian GNU/Linux 3.1 is probably not for you if you have an aversion to man pages or Google. But it's very flexible indeed. This article scratches only the surface of Debian's potential as a platform for secure server operations or for security scanning and auditing.

Next month, I'll conclude my “Security Features” trilogy with Red Hat Enterprise Linux. Until then, take care!

Resources for this article: /article/8885.

Mick Bauer (darth.elmo@wiremonkeys.org) is Network Security Architect for one of the US's largest banks. He is the author of the O'Reilly book Linux Server Security, 2nd edition (formerly called Building Secure Servers With Linux), an occasional presenter at information security conferences and composer of the “Network Engineering Polka”.

______________________

White Paper
Linux Management with Red Hat Satellite: Measuring Business Impact and ROI

Linux has become a key foundation for supporting today's rapidly growing IT environments. Linux is being used to deploy business applications and databases, trading on its reputation as a low-cost operating environment. For many IT organizations, Linux is a mainstay for deploying Web servers and has evolved from handling basic file, print, and utility workloads to running mission-critical applications and databases, physically, virtually, and in the cloud. As Linux grows in importance in terms of value to the business, managing Linux environments to high standards of service quality — availability, security, and performance — becomes an essential requirement for business success.

Learn More

Sponsored by Red Hat

White Paper
Private PaaS for the Agile Enterprise

If you already use virtualized infrastructure, you are well on your way to leveraging the power of the cloud. Virtualization offers the promise of limitless resources, but how do you manage that scalability when your DevOps team doesn’t scale? In today’s hypercompetitive markets, fast results can make a difference between leading the pack vs. obsolescence. Organizations need more benefits from cloud computing than just raw resources. They need agility, flexibility, convenience, ROI, and control.

Stackato private Platform-as-a-Service technology from ActiveState extends your private cloud infrastructure by creating a private PaaS to provide on-demand availability, flexibility, control, and ultimately, faster time-to-market for your enterprise.

Learn More

Sponsored by ActiveState