  We study the $\frac{\lambda}{4!}\phi^{4}$ massless scalar field theory in a
four-dimensional Euclidean space, where all but one of the coordinates are
unbounded. We are considering Dirichlet boundary conditions in two hyperplanes,
breaking the translation invariance of the system. We show how to implement the
perturbative renormalization up to two-loop level of the theory. First,
analyzing the full two and four-point functions at the one-loop level, we shown
that the bulk counterterms are sufficient to render the theory finite.
Meanwhile, at the two-loop level, we have to introduce also surface
counterterms in the bare lagrangian in order to make finite the full two and
also four-point Schwinger functions.
