The problem of a shock wave interacting with a porous medium (reflection and transmission) is of interest to both, practical applications and fundamental gasdynamic theory. For practical applications, a porous medium can be used to attenuate both the reflected and transmitted shock wave. From the fundamental theory point of view, the transient gasdynamic processes subsequent to reflection off a porous interface and the propagation of the dispersive shock wave through the porous medium are not well understood both qualitatively and quantitatively. The majority of the investigations to date are concentrated on the propagation of the transmitted shock [1]. Much less attention has been devoted to the reflected shock from the porous interface. The objective of the present study is to access the effectiveness of the porous interface in attenuating the reflected shock.