Snort is the de facto standard for open source network intrusion detection. The developer community has kept a fairly low profile for a couple of years, but extensions like Snorby, OpenFPC, and Pulled Pork have given the old hog a new lease on life.

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

If you need to monitor very large networks, you need powerful software. OpenNMS offers serious monitoring capabilities in a truly open source package.

Although you give up control of the underlying infrastructure when you use cloud computing, you can still maintain some control over security.

The Prelude security information management system receives both host- and network-based IDS messages and displays them in an easy web interface. We show you how to set it up.

Unless your surveillance cameras are wired directly to a video board, they are notoriously insecure. We show you how to keep your cameras from being compromised.

New web technologies address shortcomings in web browsers but create new problems as well.