Network slow but you don't know the cause? Use Bandwidth Analyzer Pack (BAP) to monitor and analyze network bandwidth performance and traffic patterns. With BAP you can identify which users, applications, and protocols are consuming the most bandwidth. You can also monitor Wireless LAN Controller traffic to see what applications and clients are using your wireless network. Try it free for 30 days!Advertisement
User mode linux virtual machines management in pure bash 3.x Manages separate hosts and virtual networking on linux host, firewalling planned. This tool aims to be lightweight production environment controler, not a huge virtual network simulator.