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In recent years, Intrusion Prevention System (IPS) have been widely implemented to prevent from suspicious threat. Unlike traditional Intrusion Detection System, IPS has additional features to secure computer network system. The additional features identifying and recognizing suspicious threat trigger alarm, event notification, through responsible response. However, IPS has issues problem, which affect the utilized overall system. In this paper we present the main challenging problem and steps to avoid that, such as (i) accuracy signature, (ii) the traffic volume, (iii) topology design, (iv) quota usage logging, (v) protecting intrusion prevention system, (vii) monitoring sensor, and (viii) collaboration of UTM. Finally, as part of our enhancements, we explored the possibility of making framework to collaborate and integrated various technologies of defense system, we called Unified Threat Management (UTM).