Published at LXer:
There are a variety of Intrusion Detection Systems in the market ranging from the enterprise-level managed-network monitoring solution to a simple on-the-host logging system. There is also a distinction between an Intrusion Prevention System (IPS) and an IDS. An IPS goes one better than the IDS and attempts to block an attack in progress whereas the IDS attempts to log the attack and optionally notify a responsible party to employ an incident response plan.
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