A compressible vortex ring forms at the open end of a short driver section shock tube when the impulsive flow behind the incident shock comes out of the tube. In the present study, we investigate the interaction of the incident shock, followed by the compressible vortex ring, with a perforated axisymmetric cone mounted on a flat surface with the aim of achieving a reduction in the effect of blast impact. Two-dimensional unsteady, axisymmetric numerical simulation is performed using ANSYS Fluent. Some interesting flow features have been observed during the reflected shock vortex interaction. The interaction of the primary reflected shock and expansion waves from the perforated surface of the cone resulted in a more unstable primary vortex ring than the solid cone case. A new shock structure, named the wine-glass shock (WGS), is observed when the subsequent compressive waves from the perforations interact with the secondary reflected shock from the flat surface. The formation of a tent shock is also observed as the embedded shock of the vortex ring and the captured reflected shock from the flat surface merge, similar to the case of interaction with an axisymmetric solid cone in a previous study. The pressure plots at different locations of the flat surface show that the incident shock strength is reduced compared to the solid cone case.