ntopng

ntopng

How ntop built a web-based traffic analysis and flow collection with InfluxDB
A couple of days ago InfluxData hosted a ntop webinar about how we have integrated InfluxDB into ntopng. Those who have not attended it can give a look at the presentation slides as well watch the webinar. In essence: ntopng is based on RRD for timeseries As networks grow, ntopng needs to store more time series more granular. RRD is file based, that is a good things as configuration is minimal, but it does not scale on mid/large networks. We need an alternative, and found InfluxDB to be the best option …
ntopng

How to use ntopng in compliance with GDPR
Today the General Data Protection Regulation (GDPR) (EU) 2016/679 is effective in the European Union. GDPR is designed to protect personal data and thus preserve privacy in particular as specified in articles 13 to 22, and 34. As we manufacture tools for traffic monitoring, we’ve to make sure that our tools can be used in compliancy with GDPR. In particular we’ve implemented a couple of features that can be useful: If you go select “Preferences” from the ntopng menu, and click on the “Misc” pane you can access the preference for …
ntopng

ntopng goes Elastic: Introducing ElasticSearch 6 Support
As you ntopng users know, out of the Elastic toolset ntopng supports both ElasticSearch and LogStash. You can use them using the -F flag: --dump-flows|-F] <mode> | Dump expired flows. Mode: | es Dump in ElasticSearch database | Format: | es;<mapping type>;<idx name>;<es URL>;<http auth> | Example: | es;ntopng;ntopng-%Y.%m.%d;http://localhost:9200/_bulk; | Notes: | The <idx name> accepts the strftime() format. | <mapping type>s have been removed starting at | ElasticSearch version 6. <mapping type> | values whill therefore be ignored when using | versions greater than or equal to 6. | …
ntopng

Welcome to ntopng 3.4: Improved Alerts/SNMP/Asset Discovery, InfluxDB/Prometheus Support
We’re happy to announce the release of ntopng 3.4 that introduces several enhancements and new features, some of which will be finalised in 3.6 due later this year. This version consolidates several months of work and paves the way to more radical changes planned for the next release. In particular beta features present in this version include support for InfluxDB and Prometheus so that you can use ntopng for exporting traffic data towards time-series databases (you can read about influx and prometheus). We have also revamped the alert implementation and introduced initial …
Announce

Introducing Multi-language Support in ntopng
Traditionally all ntop tools have manuals and user interface in English. As sometimes our users are not really familiar with it, we have decided to introduce user interface translation of the user interface so that we can make those users more comfortable when using ntopng. As the moment we have added support for Italian and German, but we might consider adding further languages in the future. When you first login to ntopng after installation you will notice that there is a new menu that allows you to set the language …
nProbe

Network Monitoring 101: A Beginner’s Guide to Understanding ntop Tools
The first important step to start with network monitoring is to analyze what we want to monitor and how to deploy the monitoring solution in the existing network. Here are some important questions to ask ourselves before starting the actual monitoring: Do we need to monitor the entire network or just a specific segment? Do we already have network appliances with network flow export capabilities (e.g. NetFlow/sFlow devices)? Can we use port mirroring of a switch or a network TAP? Where are we deploying our network monitoring appliances to get …
Announce

Announcing ntopng 3.2 – The First Move Towards Active Network Monitoring
Today we are glad to announce the new 3.2 stable release of ntopng. Among the most important new features available in this release, there is without any doubt an advanced network devices discovery functionality. Historically, ntopng has always been a fully passive monitoring tool. This release aims at complementing the information gathered from a purely passive packet capture with precious extra bits of data obtained by actively searching for devices. Network devices discovery glues together multiple techniques and heuristics, including ARP pinging, SNMP querying, SSDP discovery and MDNS names resolution. …
ntopng

Network Device Discovery. Part 1: Active Discovery
Since its introduction in 1998, ntop(ng) has been a pure (well beside DNS address resolution if enabled) passive network monitoring tool. Recently we have complemented it with active device discovery in order to find out if there are silent devices in our network, and what services/OS our devices are featuring. In this article we will analyze how active discovery works, leaving to a future article the analysis of passive discovery. Active discovery can be started on demand from the menu     or from the network preferences to enable periodic …
ntopng

ntopng Grafana Integration: The Beauty of Data Visualizazion
Disclaimer This article is outdated: please see this document for using ntopng with grafana Summary Grafana is one of the most widely known platforms for metrics monitoring (and alerting); ntopng version 3.1 natively integrates with Grafana thanks to a datasource plugin which is freely available; This article explains how to install and configure the ntopng datasource plugin, and how to build a dashboard for the visualization of ntopng-generated metrics. A video tutorial is available as well: Introduction Grafana is an open platform for analytics and visualization. An extremely-well engineered architecture makes …
ntopng

Announcing ntopng and Grafana Integration
Disclaimer This article is outdated: please see this document for using ntopng with grafana This is to announce the release of the ntopng Grafana datasource that you can find on the grafana website. Using this plugin you can create a Grafana dashboard that fetches data from ntopng in a matter of clicks. To set up the datasource visit Grafana Datasources page and select the green button Add a datasource. Select ntopng as the datasource Type in the page that opens. The HTTP url must point to a running ntopng instance, …
Guides

When Live is not Enough: Connecting ntopng and nProbe via MySQL for Historical Flows Exploration
Using nProbe in combination with ntopng is a common practice. The benefits of this combination are manyfold and include: A complete decoupling of monitoring activities (taking place on the nProbe) from visualization tasks (taking place on ntopng); The capability of building distributed deployments where multiple (remote) nProbe instances send monitored data towards one or more ntopng instances for visualization; A comprehensive support for the collection, harmonization and visualization of heterogeneous flow export protocols and technologies, including NetFlow V5/v9/V10 IPFIX and sFlow; Full support for any proprietary technology that sends custom …
ntopng

How to use ntopng for Realtime Traffic Analysis on Fritz!Box Routers
Fritz!Box routers are popular devices that many people use to connect to the Internet. Inside these routers there is a hidden (i.e. not accessible from the router web admin page, but that you access directly with a web browser by writing the whole URL) URL http://192.168.2.1/html/capture.html (BTW replace the 192.168.2.1 IP address with your Fritz!Box router IP if you have changed it) that can be used to dump router traffic in pcap format. While pcaps are good for troubleshooting, most people need to know what is happening on their network in realtime, …

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