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Ntop definition

Ntop. This is an integrated tool that can do various kinds of measurements and types of analysis on IP traffic. The four main functions of Ntop are traffic measurement, traffic monitoring, network optimization and planning, and detection of network security violations. Ntop is available as an open source package [44]. The tool can capture and analyze traffic separately from various hosts in a broadcast environment [41]. • MIB-II: The IETF defined the MIB-II [45] as a MIB that all compliant devices should implement and in fact has been deployed by the majority of IP capable equipment. Many IP related metrics can be derived by measurements taken from MIB-II. • Remote Monitoring (RMON): This standard is defined by IETF and enables the monitoring of complete network segments consisting of multiple hosts. RMON currently exists in two versions (RMON-1, and RMON-2) which are described in a set of four documents [46, 47, 48, 49]. RMON-1 can only be used to monitor networks at the Ethernet layer, whereas RMON-2 adds capabilities to RMON to also monitor layers 3 up to 7 of the OSI model. RMON can be used to determine spurious packet rates, error ratios and loss ratios within a single broadcast domain along with throughput verification but it cannot measure transfer delay or variations in transfer delays [41]. • Multi Router Traffic Grapher (MRTG): This tool can monitor sent and received traffic along with occurred errors at router interfaces, and present the results in a graphical form on a web page. The information that MRTG provides can be used as an indication for the values of the throughput and error ratio [41].
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Examples of Ntop in a sentence

  • Finally, in the renumbered network, azenar and aria monitor each other, and of course are both renumbered.We deployed the same management/supervision applications on luffy, aria and azenar, which are NetSNMP, Ntop, MRTG and Nagios.The renumbered hosts are configured to use Stateless Address Autoconfiguration (SLAAC) for practical purposes, instead of DHCPv6.

  • The spread in the trends induced by errors in measurements and infilling has a standard deviation of 0.028 Wm−2, compara- ble to the uncertainty due to internal variability when the upper ocean is fully sampled, but smaller than the uncertainty due to internal variability when only the Argo region is sampled within CESM1.

  • The license partner can download the original electronic invoice from the ARA online portal.

  • When the network is renumbered, if the monitoring station uses a dual stack network IPv4 and IPv6, even if the IPv6 address used by Ntop isn't updated according to the new address, the stats are still updated (for both IPv4 and IPv6).We used the same script to resolve the problems, and then it worked perfectly.

  • Ntop isn't concerned, because there isn't any such configuration for this tool.Using LLA with NetSNMP works fine, SET and GET operations succeed, before, during and after a network renumbering.

  • We don't know yet if this will be done by writing a script or modifying Ntop itself.Then, we are aiming at providing, either a dependence MIB or a daemon running on the managed hosts and which would alert the management station if something went wrong.

  • We also have to take a look at the problem from the software developer's point of view, and try to provide some hints on how these could evolve in order to avoid some of the problems we highlighted earlier.Once these are done, the first thing we would like to take care of is the data continuity for Ntop.

  • The original version of Ntop [2] and argus [10] are good examples of the single system architecture, which may still be deployed on under-utilized and low-speed network links.

  • If the firewall is Unix-based, Ntop (see below) can give very good graphical statistics of network usage.Netflow is a feature of Cisco routers that collects network data.

  • The information about the captured packets is then used to perform the four main Ntop functions.

Related to Ntop

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