The description of disordered porous media through the Dual Site-Bond Model (DSBM) is reviewed and updated with the inclusion of new results. After a brief discussion of the DSBM, the percolation properties of networks are studied. These present novel features with respect to classical percolation in non-correlated net- works. These properties are then used in discussing different processes in disordered porous media, namely, invasion percolation and adsorption-desorption hysteresis. Finally, a method for the characterization of pore size distributions from experimental adsorption-desorption isotherms is proposed.