  We address the interpretation of the Landau gauge gluon propagator at finite
temperature as a massive type bosonic propagator. Using pure gauge SU(3)
lattice simulations at a fixed lattice volume $\sim(6.5fm)^3$, we compute the
electric and magnetic form factors, extract a gluon mass from Yukawa-like fits,
and study its temperature dependence. This is relevant both for the Debye
screening at high temperature $T$ and for confinement at low $T$.
