We will try to demystify some of these terms in order to provide a clearer picture of the market landscape. Marketing departments and industry analysts routinely coin new terms and related acronyms to spice up the conversation, but these can add confusion if not clearly understood. IPS and IDS however are very closely related and sometimes people lump them together and just call them an IDPS. With that definition in mind, an “Intrusion Detection System” (IDS) is more what we are focused on. While this type of device could certainly be considered an NMA, in this paper we are more focused on NMAs that capture large volumes of traffic (often include local storage) in an offline mode and do some deep software analysis on the captured traffic. A unique requirement for an in-line IPS is a bypass switch, which “fails open” so that live network traffic is not blocked if the appliance fails. There is a class of appliance called an “Intrusion Prevention System” or IPS that operates on live network traffic and attempts to identify malicious activity (typically based on some signature or pattern that has been previously identified) and block it. In other words, they receive packets that have been replicated from the production network-typically by a network TAP or Ethernet switch SPAN port-and therefore are not operating on live traffic. A common trait of these appliances is they are passive or work in “offline” mode. The purpose of these appliances runs the gamut from tracing a hacker after a security breach, to network troubleshooting, to measuring the quality of voice and video traffic. Application Performance Management (APM)įigure 1: Network Monitoring Appliances (NMAs). ![]() ![]() ![]() High Frequency Trading Latency Measurement.Network Security, Cyber Security and Forensics.
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