Using ClickHouse Cloud with ntopng
We are happy to announce that from the latest ntopng dev (6.1) version, ntopng supports exporting data (flows & alerts) to ClickHouse Cloud. Below you can find a step-by-step guide. Quick Start…
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How Historical Traffic Behaviour Analysis Works
In ntopng we have implemented various techniques for analysing historical traffic. This post shows you the options available: In timeseries you can see the current traffic rate (line) or the traffic rate…
DoS Detection Using ntopng and NetFlow/IPFIX
Recently ntopng has been used in academia for detecting DoS (Denial of Service) attacks using NetFlow flows. In this thesis (note that the document it is written in Italian) it is shown…
How ntopng Host Traffic Accounting Works
Despite ntop has implemented rich network metrics over the years, the two most important metrics that people keep asking us are volume (how much) and time (how long). Timeseries offer a quick…
How we have Decreased ntopng Memory Usage by more than 60%
In this blog post we want to shave our experience squeezing ntopng memory usage to fit into small OT monitoring devices manufactured by our partner Endian. Just to give you an idea…
HowTo Analyse NetFlow/IPFIX/sFlow pcap Traces
Dumping sFlow/NetFlow/IPFIX flows in pcap format can be very useful for troubleshooting or for creating a compact traffic dump. For instance you can dump flow traffic with n2disk (wireshark, or tcpdump) and…
Introducing ntopng Customised Reports
In ntopng 6.0 Dashboard and Traffic Reports have been completely redesigned and rewritten from scratch with a new, flexible engine which is template-based. In a previous webinar we demonstrated how cute and…
HowTo Monitor SNMP Interfaces Utilisation and Congestion Rate
Recently, we added the ability in ntopng to monitor link utilisation using NetFlow/IPFIX. In this post, we want to show you how we further improved those functionalities by leveraging SNMP to monitor…
How Sampling and Throughput Calculation Works: NetFlow/IPFIX vs sFlow vs Packets
ntop tools are able to collect various type of flows NetFlow/IPFIX (including dialects such as J-Flow, NetStream) and sFlow/NetFlowLite, this in addition to packet capture/processing. We have decided to seamlessly handle all…
HowTo Monitor Network Interface Usage with NetFlow/IPFIX
SNMP is the de-facto protocol for monitoring network devices. Using it, it is possible to monitor "how much" a link is used. What is missing is "how" a link is used. Namely…
Securing ClickHouse and MySQL Flow Storage
ntopng stores flows data in various databases including MySQL, Elastic and ClickHouse that is the database storage that we have selected as it outpaces the others in terms of speed and reduced…
ntopng 6.0 Webinar
Last week we have released ntopng 6.0 that contains many new features and a redesigned user interface. Goal of this webinar is to walk through this new release and show a demo…
