Network Security Monitoring (NSM) torrent

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Network Security Monitoring (NSM) is an improvement over traditional Intrusion Detection Service (IDS).

Typically, an IDS filters network traffic and generates alert messages based on a set of rules and/or signatures that indicate malicious activity. Alerts include some or all of the original data that triggered the rule and in some cases event related meta-data.

By contrast, NSM stores the entire network data stream in a continuous loop at all times, much like a security video camera and Digital Video Recorder (DVR) at a bank. The IDS rules are processed against the stored data in near real time and alerts are generated and managed on an integrated security console. Because the data are retained and the meta-data stored in a database, an analyst can go back in time, more than a week in most cases, while investigating a security event. Entire network streams and conversations can be recreated and extracted from the NSM system giving the security analyst a tremendous advantage compared to traditional IDS.

Since the data are stored, once a malicious activity or pattern of abuse is identified, it is possible to search the entire enterprise for related events and then act on them.