Network auditing system and method for monitoring or auditing at least one communications network. The crossing portion 14 is fixed to a predetermined mounting face 17 through the protective film 16. The sorbent captures CO2 at a medium-high temperature above 600\xb0 C. In the exhaust part, a first fan part is connected to the first liquid receiving chamber, and a second fan part is connected to the second liquid receiving chamber through the second flow path.