Security Profile and Posture: Port 631, the Internet Printing Protocol port, is the lone open port (listening only on the local network) on a new installation of Kubuntu. Ufw, the friendlier-than-IPTables command line interface for managing Netfilter, the firewall application built into the Linux kernel, is not configured. The graphical frontend, Gufw, is not installed. AppArmor, the mandatory access security application is loaded in enforcing mode.
If you install Kubuntu 11.04 using an Alternate Installer ISO image, configure disk encryption, and enable the security features of the User Management application, you can presented a better security posture than an installation of Ubuntu 11.04.
Final Thoughts: Given the lukewarm reception to Ubuntu’s Unity desktop environment, Kubuntu presents an option that you might want to explore. It is still the same Ubuntu, but with a different and better desktop environment. If Kubuntu does not appeal to you, try Chakra, another KDE-based distribution that was just reviewed here.
Resources: If you desire to download and install Kubuntu 11.04, my recommendation is to use an Alternate Installer image. All available installation ISO images may be downloaded from here. Be sure to read the known issues before installing. And you can take a tour of Kubuntu here.
Screenshots: View additional screenshots from a test installation of Kubuntu 11.04.
The default KDE desktop showing the calendar.
Internet applications. Aside from Firefox and Fennec, the mobile edition of Firefoxr, the rest are installed by default.
The handful of installed multimedia applications. Note that in this screenshot and on all those after it, the favorite section has been populated with many more applications than are available on a default installation. It shows that when there are more applications than the space can hold, scroll arrows appear. To change the position of an application, you “tear” it off to the new position.
Installed office productivity and related applications.
The handful of graphics applications installed by default.
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