A connecting system for providing a fluidic connection, preferably between containers, wherein the connecting system has at least two connecting arrangements configured to provide the fluidic connection, namely a first connecting arrangement and a second connecting arrangement, each of which is fluidically sealed in an initial state, wherein the first connecting arrangement has, in particular, a film-shaped, brittle and/or unstable opening region, is deformable outside the opening region and is configured such that deformation causes the first connecting arrangement to open in the opening region.