Introduction ntopng, in combination with nProbe, can be used to collect NetFlow. Their use for NetFlow collection is described in detail here. In this post we measure the performance of nProbe and ntopng when used together to collect, analyze, and dump NetFlow data. The idea is to provide performance figures useful to understand the maximum […]
How Attackers and Victims Detection works in ntopng
In recent ntopng versions, alerts have been significantly enriched with metadata useful to understand network and security issues. In this post, we focus on the “Attacker” and “Victim” metadata, used to enrich flow alerts and label hosts. Specifically, the client or the server of a flow is labelled as “Attacker” when it is, with high […]
Detecting and Analysing Qakbot Traffic Using ntopng
In this post Martin shows how he has used ntopng to detect Qakbot trojan. Many thanks for this contribution. Introduction I am using ntopng for network monitoring quite some time now and I was curios to see, what ntopng would alert when detecting malware. The website malware traffic analysis is a great source for malware […]
Best Practices for High Speed Flow Collection
Most people use nProbe and ntopng to collect flows using an architecture similar to the one below where nprobe and ntopng are started as follows: nprobe -3 <collector port> -i none -n none —zmq “tcp://*:1234” –zmq-encryption-key <pub key> ntopng -i tcp://nprobe_host:1234 –zmq-encryption-key <pub key> In this case ntopng communicates with nProbe over an encrypted channel […]
What is Score, and How It can Drive You Towards Network Issues
Telemetry protocols such as sFlow/NetFlow, SNMP or packet-based traffic analysis are the source of data for network traffic monitoring. For a long time visibility was the main issue and people were attracted by new tools such as Grafana that allowed them to put on a screen a lot of data. A big misconception in this […]
How To Monitor Traffic Behind a Firewall (During and Post Pandemic)
Due to pandemic, many people are now working in a delocalised world: some work from home, others from the office. To make things even more complicated, in the past remote workers used to connect to the company network via a VPN. While this option is still possible, many resources are now available from the cloud […]
Join FOSDEM 2021 ntop sessions, Sat-Sun Feb 6-7th (online)
We are proud to announce that a couple of talks have been accepted at FOSDEM 2021, one of the most important FOSS conferences in the world that this yar will take place online due to the pandemic. In the Network monitoring, discovery and inventory devroom we will give two presentations titled “Using nDPI for Monitoring […]
Bringing Network Visibility, Cybersecurity and Encrypted Traffic Analysis to OPNsense, pfSense and FreeBSD
This is to announce the immediate availability of both ntopng and nProbe for OPNsense, pfSense and FreeBSD, directly supported by ntop, with nightly builds and all the features present on all other supported platforms such as Linux, Windows and MacOS. You can now Monitor network traffic based on nDPI. Encrypted traffic analysis (ETA) that enables […]
ntopng, InfluxDB and Grafana: A Step-By-Step Guide to Create Dashboards
Creating Grafana dashboards out of ntopng data basically boils down to: Configuring ntopng to export timeseries data to InfluxDB Configuring the Grafana InfluxDB datasource to extract timeseries data from InfluxDB Adding Grafana Dashboards panels with ntopng data This post aims at covering the topics above to serve as reference for those who want to create […]
Efficiently Detecting and Blocking SunBurst Malware
Earlier this month a new highly evasive malware attacker named SunBurst has been disclosed. Immediately some countermeasures have been disclosed and in particular some Snort/Suricata rules have been published. We have analysed the rules trying to figure out if ntop tools could detect and block Sunburst and the answer is yes, you can. Let’s have […]