Non-Linux FOSS: a Virtualized Cisco Infrastructure?

We're all familiar with the idea of virtualized computers. Not only are they a great way to better utilize resources in a server room, but they also allow you to create and destroy servers in the blink of an eye. That's perfect for a lab or training environment. Unfortunately, it's always taken a rack of actual hardware to create a training lab for Cisco hardware. Thanks to GNS3 (Graphical Network Simulator 3), that's no longer the case.

Screenshot provided by .

GNS3 is an open-source application that creates a virtual infrastructure of Cisco (or other) hardware. Not only can you watch the traffic flow, but you also can connect directly to the virtual devices and configure them like the actual hardware devices they represent. On the surface, it looks like a Visio diagram, but it's a diagram that actually does something!

Whether you're actively trying to learn to use Cisco devices or just want to try out some networking scenarios, GNS3 is an incredible tool for sandboxing network hardware. It does require you to provide the IOS firmware (they can't provide Cisco's operating systems themselves), but that's it. It works under Windows, along with OS X and Linux. If you're interested, download a copy today at


Shawn Powers is an Associate Editor for Linux Journal. You might find him chatting on the IRC channel, or Twitter

One Click, Universal Protection: Implementing Centralized Security Policies on Linux Systems

As Linux continues to play an ever increasing role in corporate data centers and institutions, ensuring the integrity and protection of these systems must be a priority. With 60% of the world's websites and an increasing share of organization's mission-critical workloads running on Linux, failing to stop malware and other advanced threats on Linux can increasingly impact an organization's reputation and bottom line.

Learn More

Sponsored by Bit9

Linux Backup and Recovery Webinar

Most companies incorporate backup procedures for critical data, which can be restored quickly if a loss occurs. However, fewer companies are prepared for catastrophic system failures, in which they lose all data, the entire operating system, applications, settings, patches and more, reducing their system(s) to “bare metal.” After all, before data can be restored to a system, there must be a system to restore it to.

In this one hour webinar, learn how to enhance your existing backup strategies for better disaster recovery preparedness using Storix System Backup Administrator (SBAdmin), a highly flexible bare-metal recovery solution for UNIX and Linux systems.

Learn More

Sponsored by Storix