Traffic monitoring applications often aggregate traffic in flows, that in essence is a way to divide traffic according to a 5-tuple key (Protocol, IP/port source/destination). Flows are then aggregated for instance according to IP address or protocol, and often represented … Continue reading
How to use nDPI from CLI to analyse network traffic
Most people use nDPI indirectly being it part of ntopng and many other non-ntop developed tools. However not many people know that nDPI can also be used from the command line to analyse network traffic. This is useful to create … Continue reading
Introducing nDPI v3: Encrypted/Malware Traffic Analysis with Ease
Those who though that DPI died with the advent of traffic encryption should play with nDPI v3 that we’re introducing today. As already discussed, the pervasive use of encrypted traffic requires a new mindset when analysing network traffic. We decided … Continue reading
How Encryption Changed Network Traffic (Monitoring). Finally.
For years traffic monitoring tools assumed traffic was in clear text. This because when the Internet was created all the main protocols such as DNS, HTTP, SMTP, Telnet, POP were in clear. With this practice it was easy to report … Continue reading
New Challenges in DPI Protocol Detection
In the early Internet days, each network protocol was designed for a specific purpose: SMTP for sending emails, HTTP for the web and so on. In order to make sure that implementations where compliant with the specification, there was an … Continue reading
TLS/SSL Analysis: When Encryption and Safety Are Not Alike
Most people think that SSL means safety. While this is not a false statement, you should not take it for granted. In fact while your web browser warns you when a certain encrypted communication has issues (for instance them SSL … Continue reading
nDPI 2.8-stable is Out
This new release brings several fixes that make nDPI more stable. Such fixes involve especially DNS and HTTP traffic dissection. Here is the full list of changes: New Supported Protocols and Services Added Modbus over TCP dissector Improvements Wireshark Lua … Continue reading
Traffic Classification Using nDPI over DPDK
Last week we have attended the DPDK Summit North America 2018 and talked about how to use nDPI over DPDK, a kernel-bypass toolkit similar to PF_RING. For those who have not attended the presentation, they can read the presentation slides. … Continue reading
Promoting Traffic Visibility: from Application Protocols to Traffic Categories in nDPI and ntopng
Often we receive emails asking question like: “how many protocols nDPI supports?”, “how do you position nDPI against commercial DPI toolkit A, B, C?”. Although these questions are reasonable, they do not grasp the significance of DPI. For years commercial … Continue reading
Introducing nDPI 2.4
This is to announce the release of nDPI 2.4 that is an incremental release mainly introducing the concept of categories in addition to new dissectors and bug fixes. In a nutshell in order to limit the number of custom protocols … Continue reading