Techniques are described for selectively filtering data, such as network packets, that correspond to forwarding tables. The system has an input packet queue located within a block of system RAM, a main processing module, and an intelligent IO interface module all coupled to the main system bus. The strakes are defined by a two or three dimensional spline from the surface towards the aft surface inside said first and second intersection lines and inside the bounding box. Since normally off JFET is a majority carrier device, very high frequency response can be achieved.