ntopng

Cybersecurity

OT, ICS, SCADA: IEC 60870-5-104 in ntopng
What is OT, ICS, SCADA ? Operational Technology (OT) refers to computing systems that are used to manage industrial operations or process operations, like water treatment, electrical power distribution or wrapping a chocolate in foil. ntopng supports some Industrial control systems (ICS) protocol often managed via a Supervisory Control and Data Acquisition (SCADA) systems. Via …
nProbe

Now available ntopng/nprobe ARM64 Docker Images
Supporting 64 bit ARM platforms is important because there is now a plethora of inexpensive boards based on this architecture. Thanks to the use of docker containers, several manufacturers allow their devices to take advantage of this technology to run third-party software on devices that used to be not extensible. Here you can read how …
nProbe

How To Analyse Asymmetric VLAN Traffic
A VLAN is a method for partitioning a layer two broadcast domain creating virtual networks of homogeneous systems hence promoting network segmentation. A ethernet port with no VLAN tag is called access port, whereas a switch port with VLAN-tagged packets is called tagged or trunk port. End systems are usually connected to access ports meaning …
nProbe

How Flow-Based Traffic Classification Works
Many ntop products such as ntopng, nProbe, and PF_RING FT just to name a few are based on network flows. However not all our users know in detail what is a network flow, and how it works in practice. This blog post describes what they are and how they work in practice. What is a …
ntopng

Going Beyond 5-Tuple in Network Flow Analysis
Traditionally flow-based tools are based on the 5-tuple attributes (source and destination IP, source and destination port and the protocol field). Often they are complemented with additional attributes such as VLAN or Tunnel Id in order to avoid mixing in the same flow packets that belong to different communications.  The above picture shows the 5-tuple …
ntopng

Announcing ntop Professional Training: May 2023
ntop tools range from packet capture, traffic analysis and processing, and sometimes it is not easy to keep up on product updates as well master all the tools. This has been the driving force for organising ntop professional training: . This is to announce that in May we have scheduled the next ntop Professional Training …
ntopng

How to Keep your Infrastructure Healthy with ntopng
Almost 3 years ago we introduced Active Monitoring support in ntopng. This allows you to monitor the infrastructure and make sure that all systems are operational. In fact ntopng can continuously monitor hosts in your network by periodically running different active measurements including: ICMP, which measures the RTT (Round Trip Time). Continuous ICMP, which evaluates network reachability …
ntopng

Introducing ntopng 5.6: New Reports and Cybersecurity Indicators, Kafka, Lua/Python API, Flow Collection Clustering
This is to announce the availability of ntopng 5.6 stable release that brings several additions and improvements: We have started to introduce responsiveness in ntopng GUI by means of VueJS. All timeseries and historical pages are now rewritten to take advantage of modern web technologies. You can now compare timeseries across hosts, devices, or anything …
ntopng

Using Multitenancy in ntopng
Not all ntop users know that ntopng natively implements multitenancy support. Namely you can use ntopng to collect and analyse traffic from multiple users, and show to each user its own traffic, hiding all the rest. All you need to do is very simple Start ntopng and configure it to receive monitored traffic. You can …