High-capacity WAN links are far too expensive a commodity for companies to waste, so some form of traffic analysis and management is needed to get the best value out of them. The PacketLogic PL2 appliance from Swedish company NetIntact looks to have all the angles covered as it offers a range of features highly suited to enterprises and ISPs. The appliance takes a modular approach, so you can start off with the base unit running network surveillance and then add traffic shaping, statistics and firewalling as and when required.