1.2 What is an IPS?

An IPS (or Intrusion Prevention System) is a system for preventing intrusions into the organisation's network(s). It works the same way as an IDS (in fact it is usually the same software with an adapted function), except that in this case it does interfere in the organisation's traffic, in such a way that when a communication is detected that is identified as an attack, the system can opt not only to launch alerts, but can even discard the packages sent by the communication, creating the same effect as a firewall.