IPS
The Intrusion Prevention System (IPS) detects at an early stage whether networks and entire systems on computers are under attack and fends off these attacks automatically. The IPS can also be seen as additional protection to the firewall. However, the Intrusion Prevention System must be distinguished from the Intrusion Detection System (IDS). The IDS takes on a passive role where it detects and identifies attacks, but only informs users and admins about the attack. Whereas the IPS also detects attacks, but actively intervenes on its own to defend against the attacks. It can block certain data bundles in the event of an attack. The intrusion prevention system also directly prevents certain connections in the event of an attack.