Build a complete mail server on FreeBSD
E-mail is one of the seemingly mundane applications of the internet that everybody seems to take for granted. On the administrative side of things, however, e-mail is surprisingly complex. Especially if you mean to mix in measures to counter spam and viruses, supply users with custom server-based filtering rules, out-of-office replies on steroids, advanced autoresponders and a nice web interface to top it all off.
Free mediacenter: Arch Linux and XBMC
Have a PC standing around gathering dust? If it's not much older than 3 years, you'll be surprised at how easily you can turn it into the centerpiece of your digital entertainment world 100% free of charge. This series tells you everything you need to know: hardware concerns, getting and installing the right software and finally: how to get your audio from all those plastic discs into your new mediacenter.
Silicon Graphics workstations
Over the past year I've spent quite some time tinkering with old Silicon Graphics workstations. These MIPS-based UNIX machines have a certain historic appeal for those who are interested in such things. And of course it's always fun to play with gear that used to cost a small fortune to own. Be advised that -should you wish to acquire one- none of these machines are PC's.