SPOTLIGHT: How to protect that VoIP network

Whether you've planted a Voice over Internet Protocol network, or are considering an implementation, it's not too late to get a good solid grasp on security issues and potential ways of protecting the new network. As experts note, there are more than a few things to worry about, from WiFi jamming to sniffers to phreakers. The best defense is a good offense, and it starts with understanding where the vulnerabilities are and what you can do to avoid the dangers. Article