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Enabling and Configuring Modules

By default NetFlow Optimizer is preconfigured with one Module enabled -- Network Traffic and Device Monitor: 10067 Top Traffic Monitor. You may enable / disable the entire set or each Module by clicking on /

To configure Module parameters expand Module set and click on its’ name.

Configure Top Traffic Monitor Module Parameters

Logic Parameters

Parameter NameDescriptionComments
Top N per exporter (0 for all traffic)Specifies the number of top hosts reported per NetFlow exporter. Set to 0 to report all traffic.Min: 0, Max: 100,000, Default: 50
Enable(1) or disable (0) reporting by authoritative exporters onlyIf set to 1 (deduplication enabled), the Module reports flows only from authoritative exporters.Default: 0
Enable(1) or disable (0) reporting client portIf set to 1, the ephemeral client port number is reported. If set to 0, client port number is not taken into account for consolidation, and reported as 0.Default: 1
Enable(1) or disable (0) multiplying by sampling rateIf set to 1, when *flow is sampled (e.g. sFlow, sampled NetFlow/IPFIX), the sampling rate is used to multiply bytes and packets to report total traffic as statistical approximation.Default: 0
Default sampler rateIf sampling information is not available, use this rate to multiply bytes and packets to report total traffic as statistical approximation.Default: 1
Enable(1) or disable (0) reporting flow denied events.If set to 1, enable reporting firewall denied flows. If set to 0, firewall denied flows are not reportedDefault: 1

Data Consolidation Parameter

ParameterDescription
Data collection interval, secModule logic execution interval, min = 5 sec, max = 86400 sec, default= 300 sec. During this time bytes and packets are summed up in in-memory database by source IP, destination IP, ports, and protocol. At the end of data collection interval the list of consolidated flows is sorted by bytes, and only top N records (1st parameter) are converted to syslog or JSON and reported

Data Sets and Enrichment Parameters

ParameterDescription
List of known server destination port numbersList of server destination ports to be used to determine which host is a client and which is a server. If the list is empty, the server is the one with a smaller port number. This parameter is ignored for unidirectional flows.

This parameter is pre-loaded with values from: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml

See NetFlow Optimizer User Guide for more information on other Modules functionality and configuration.