Can system intrusions be stopped? Support your response.

System intrusions can be stopped, though it remains a continuous challenge. Stopping intrusions relies on a combination of preventative measures and active response systems.

Prevention starts with robust security policies, proper system configurations, and network firewalls. Firewalls filter malicious traffic before it reaches internal systems. When an intrusion attempt or malicious activity is detected, Intrusion Prevention Systems (IPS) are deployed to actively block or terminate the threat. Unlike Intrusion Detection Systems (IDS), which primarily generate alerts, IPS can automatically take action. For instance, an IPS might drop malicious packets, block an offending IP address, or reset a compromised network connection. This active prevention capability extends beyond mere detection.

Methods for preventing and stopping intrusions represent a long-standing area of research in network security.