An Intrusion Prevention System (IPS) is a critical layer of defense that helps you protect your network from harmful traffic that has passed through or bypassed your firewall. It inspects Ethernet, IP and TCP layers which harbor attacks. Many IPS vendors differentiate their offerings with claims about high speed, low latency and maximum bandwidth supported. While packets processed per second is a valuable indicator of traffic volume and throughput, it is not a gauge for security effectiveness or the capacity to prevent cyber threats. The true measure of IPS security performance is the accuracy and effectiveness of identifying and blocking malicious traffic.