DS/IPS IDS- Reactive approach Ps- Proactive approach iPS differs from idS in that it takes a proactive approach to attacks-eg blocking the packets concerned -rather than a reactive approach e.g. triggering human intervention5 IDS/IPS IDS – Reactive approach IPS – Proactive approach IPS differs from IDS in that it takes a proactive approach to attacks - e.g. blocking the packets concerned - rather than a reactive approach - e.g. triggering human intervention