- IDS is Intrusion Detection System and it only detects intrusions and the administrator has to take care of preventing the intrusion.
- Intrusion Detection Systems (IDS) scan and monitor network traffic for signals that attackers are attempting to infiltrate or steal data from your network using a known cyber threat. IDS systems detect a variety of activities such as security policy violations, malware, and port scanners by comparing current network activity to a known threat database.
- Whereas, in IPS i.e., Intrusion Prevention System, the system detects the intrusion and also takes actions to prevent the intrusion.
- Intrusion Prevention Systems (IPS) are located between the outside world and the internal network, in the same area of the network as a firewall. If a packet represents a known security hazard, an IPS will proactively prohibit network traffic based on a security profile.
- The fundamental distinction is that an IDS is a monitoring system, whereas an IPS is a control system. IDS makes no changes to network packets, whereas IPS block packet delivery depending on the contents of the packet, similar to how a firewall blocks traffic based on IP address.
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