Even tried and trusted configurations that have proved their value through the years can be tripped up by special cases – for example, all of your users logging in with the same IP address. Experienced administrators and Bash aficionados will then enable debugging and launch a systematic search for configuration errors.

The big virtualization tools like KVM and Xen can’t compete on a small scale with resource-spare cgroups and Linux Containers.

The Wireshark free network sniffer rolls out 1.6 release with advanced features.

Supermicro announces its SSE-X24S, a new high-performance, 10Gb Ethernet switch.

Firewalls often block shell access for remote users on a corporate network or at an Internet cafe. Luckily, tools like PHP Shell and Shell in a Box put the shell in a browser window.

An abundance of buffers hides the Internet’s dirty little secret.

First the fun, then the pleasure: This month, we look at a TCP that administrators have to take seriously, followed by some URL fun.

Red Hat announces IBM, Accenture, Alfresco, Cisco, HP and Intel representatives are scheduled to deliver keynotes at the seventh annual Red Hat Summit and JBoss World, May 3-6, 2011 in Boston, Massachusetts.