Thisisabookaboutbuildingthenetworkyouneed.We’lldipintothetopicsoffire-wallsandrelatedfunctions,startingfromalittletheory.You’llseeplentyofexamplesoffilteringandotherwaystodirectnetworktraffic.I’llassumethatyouhaveabasictointermediatecommandofTCP