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EXECUTIVE SUMMARY Network administrators need to understand the data that is actually being sent over networks. Network monitoring is critical in network optimization and security. How much data was sent? When? What was sent? Who sent it? What is causing the network to crawl? And the list goes on. Current tools base their analysis primarily on the IP and TCP headers, which can be misleading or intentionally falsified. This leaves network administrators manually sifting through raw network packet dumps, piecing fragments of information together to understand problem in hand. This is tremendously time-consuming and ? since networks deal with one packet at a time, while humans ask applications to perform tasks that might open a dozen simultaneous connections ? ultimately not very useful to someone needing a big picture view of an employee?s suspected network abuse, or all the details of an intrusion attempt.
This white paper is designed to brief marketing professionals and systems administrators on network monitoring and introduce the main applications of the jNetmon suite of monitoring products. Network Monitoring has been around as long as there have been networks. Most routers, switches, and intelligent hubs collect some level of network traffic statistics. This information is important to network administrators who are responsible for keeping small networks at peak performance. Without network monitoring systems, it would be difficult to identify and resolve network problems. To ensure 100% system availability, IT department not only need to reduce the problem resolution time, but also needs to prevent problems from occurring. With these kind of tools, network and application administrators are alerted when there are network problems. They can regularly assess the health of their network system and take proactive measures before facing any fatal crashes. more...