Passive Network Analysis

In sports, it's pretty much accepted wisdom that home teams have the advantage; that's why teams with winning records on the road do so well in the playoffs. But for some reason we rarely think about "the home field advantage" when we look at defending our networks. After all, the best practice in architecting a secure network is a layered, defense-in-depth strategy. We use firewalls, DMZs, VPNs, and configure VLANs on our switches to control the flow of traffic into and through the perimeter, and use network and host-based IDS technology as sensors to alert us to intrusions.

Read the article HERE.