Research in Intrusion Response has shown that the success rate of an attack increases with time. With attacks becoming sophisticated and automated, the response to these attacks still remains a time-consuming manual process. An active response system is a mechanism that can be used in conjunction with an intrusion detection system (IDS) to provide a network administrator with the capability to respond to an attack automatically when it has been detected. Active Real-time RespOnse System (ARROS) is an active, distributed, adaptive, and real-time Intrusion Response System (IRS) that provides Intrusion Response capabilities to INBOUNDS (Integrated Network Based Ohio University Network Detective Service), a network-based, real-time, hierarchical intrusion detection and response system being developed at Ohio University. ARROS consists of distributed autonomous agents that run at various different points on the network it protects. Agents communicate with each other to share information about the network, intrusions, and co-ordinate the response. Each ARROS agent is a fully functional autonomous unit capable of responding to intrusions in a distributed fashion. Coupled with priority queuing for ARROS traffic, distributed response capabilities, and time-bound response the ARROS system is able to provide real-time active Intrusion Response while minimizing adverse effects to the host network.