Conventional, woodpecker-style port knocking is open to sniffing and brute force knocking attacks. Sending an encrypted packet with an access request to the server is safer and more modern. Learn more about Firewall Knock Operator, a.k.a. Fwknop.

NX provides fast terminal services, even over slow connections.

Windows terminal services in Linux with Rdesktop

AuFS offers a painless filesystem for a thin client, and FS-Cache provides a persistent cache.

Sun Microsystems has now released a management solution following its Xen-based virtualization solution, XVM.

What is the real meaning of those little “load average” values in the output of shell commands like procinfo and uptime, and what can you do with these numbers?

You don’t have to be an expert to set up your own Quake 3 game server.

Version 3.00 of the free logfile analyzer W3Perl has just been released, and includes a number of enhancements. Among other features, the program now supports weekly and monthly statistics with the same granularity as daily reports, and can email the results if needed.