  The transport properties of dense stellar electron-proton plasma is studied
following an exact relativistic formalism in presence of strong quantizing
magnetic field. The variation of transport coefficients with magnetic field are
found to be insensitive for the field strengths $\leq 10^{17}$G, beyond which
all of them abruptly go to zero. As a consequence, the electron-proton plasma
behaves like a superfluid insulator in presence of ultra-strong magnetic field.
