Many managers and network administrators believe that since they have a firewall constructed by security experts then they are protected from unwarranted attacks and can sleep well at night. Nothing could be further from the truth!
While looking through commercial offers for IDS products one may get the impression that in the near future, it will no longer be necessary to have an experienced administrator or security guru to monitor and maintain IT security systems. Already, the administrator’s role is seen as “a monkey with nothing better to do than push a flashing button”. Such a perception may be explained in terms of increasingly “intelligent” IDS solutions.
The term “firewall” evokes the image of a solid wall in a building, which prevents a fire spreading from one part of the building to another. Sometimes it is understood as a “wall of fire” blocking the entrance.