CeBIT 2010 CFP

You need to think like an attacker to keep your network safe. We asked security columnist Kurt Seifried for an inside look at the art of intrusion.

An SSH connection to a not directly linked system frequently makes at least one hop through the DMZ. The Belier tool simplifies this process. The program is now available in Debian's sid repository.

The Network Security Toolkit (NST), a live DVD with countless security tools, is available in version 2.11.0. Much of the work focused on the installation and update mechanisms.

Learn how to monitor and block attacks without lifting a finger.

Google’s Ratproxy is a free testing tool that searches for security problems in web applications.

Just a couple of hours after completing this article, Charly headed off on vacation. Before he left, he indulged in a spot of piercing to help him work around the paranoid firewalls waiting for him in the Internet cafes at his holiday location.

Spot intruders with these easy security visualization tools.

A slow death for the default configuration.