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Packet Monitoring using ntop and Cisco ON100
From time to time, Cisco builds ntop-friendly products. This is the time of the Cisco ON100 network agent. This tiny device that can fit on your hand, has been integrated with ntop for the purpose of...
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SFProbe: Embedding nProbe on an SFP
In 2004 my friend Alex Tudor of Agilent involved ntop on a very challenging project. The idea was to monitor the network from the exact place where packets were originated. In fact popular network taps...
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Meet ntop @ Cebit 2012
All those visiting Cebit next week, will have the chance to see what we’re doing at ntop for providing better network monitoring services. We will give a presentation at the Open Source Forum next Wedn...
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Benchmarking PF_RING DNA
For years networking companies have used the buzzword zero-copy to qualify those hardware/software solutions that allow applications to play with packets without the need to copy them at all. Zero-copy...
View ArticlePF_RING DNA RFC 2544 Benchmark
Over the past couple of weeks we have further improved the DNA performance, and thus we have decided to test its performance. In order to do reproducible measurements we decided to adopt the benchmark...
View ArticleGetting More Information On Your Network Performance
This week ntop will be present at the Open Source System Management Conference 2012, that will take place this Thursday in Bolzano, Italy, organized by our partner and sponsor Würth-Phoenix. We’ll give...
View ArticleSay hello to Libzero
Last year we have introduced PF_RING DNA for implementing 0% CPU receive/transmission on commodity 1/10 Gbit network adapters. We considered DNA as a starting point, as it implemented high-speed RX/TX...
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Hardware-based Symmetric Flow Balancing in DNA
Years ago, Microsoft defined RSS (Receive-Side Scaling) with the goal of improving packet processing by enabling multiple cores to process packets concurrently. Today RSS is implemented in modern 1-10...
View ArticlePF_RING DNA/Libzero vs Intel DPDK
From time to time, we receive inquiries asking us to position PF_RING (DNA and Libzero) against Intel DPDK (Data Plane Development Kit). As we have no access to DPDK, all we can do is to compare these...
View ArticleUsing PF_RING DAQ for high-performance 1/10 Gbit Snort-based IDS/IPS
Months ago we have started to design a new PF_RING DAQ module for snort. We decided to do this project with ENEO Tecnologia who has both sponsored the development and helped us to implement all those...
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ntop 5.0 Released
After a year, it’s time to release a new stable version of ntop. This version deserves a major number, 5.0, as many things have changed. Beside bug fixes and general improvements, in this release we...
View Article10 Gbit (Line Rate) NetFlow Traffic Analysis using nProbe and DNA
In the past couple of years, 10 Gbit networks are gradually replacing multi-1 Gbit links. Traffic analysis is also increasingly demanding as “legacy” NetFlow v5 flows are not enough to network...
View ArticleAccelerating Snort with PF_RING DNA
Since some time, PF_RING includes a DAQ (Data AcQuisition library) module for the popular Snort IDS/IPS. With respect to Linux AF_PACKET, the use of PF_RING significantly accelerates all snort...
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Monitoring on the MicroCloud
When I started to develop ntop in 1998, it was clear to me that the network was a huge, volatile (or semi-persistent if you wish), constantly changing database. In ntop this database is implemented in...
View ArticleUsing n2disk for 10 Gbit line-rate packet-to-disk
Packet-to-disk is the ability to dump network packets to disk. This activity is important for implementing a sort of “network time machine” so that when something unexpected happens, you have the...
View ArticlePF_RING 5.5.0 Released
New libzero features DNA Cluster: number of per-consumer rx/tx queue slots and number of additional buffers can be configured via dna_cluster_low_level_settings() hugepages support...
View ArticleBYO10GPR: Build Your Own 10 Gbit Packet Recorder
Packet recorder appliances are one of the last network components that have insane prices. Years ago this was justified by the fact that in order to capture traffic at high speed it was mandatory to...
View ArticlePF_RING 5.5.1 Released
ChangeLog Updated PF_RING-aware ixgbe driver (3.11.33). Update PF_RING-aware igb (4.0.17). Fixed bug that was causing ixgbe driver not to disable interrupts. This was causing a high load on the core...
View ArticleNot All Servers Are Alike (With DNA) – Part 2
Some time ago, we discussed on the first part of this post, why not all servers spot the same performance with DNA. The conclusion was that beside the CPU, you need a great memory bandwidth in order to...
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Monitoring Mobile Networks (2G, 3G, and LTE) using nProbe
Monitoring mobile networks traffic has been traditionally perceived by the telecommunications industry as something complex, costly, proprietary. This is unfortunately one of the few fields where the...
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