Knowledge Base


DNA (1)

Why is the PF_RING DNA distribution format?

PF_RING DNA is made of two components: kernel drivers and user-space library. The kernel driver is released in source format as part of PF_RING, whereas the user-space library is released in binary format and it requires a per-MAC licenses.

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nBox (11)

What is the procedure for becoming nBox resellers?

ntop is interested in providing local support to international customers, by promoting the birth of resellers. Becoming a reseller is very simple: you need to have knowledge of network monitoring, learn the nbox, sell a minimal number of nboxes per … Continue reading

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Is ntop included with the nbox?

Yes, the nbox comes with both ntop and nprobe installed. As nboxes can install an optional harddisk, you can plan to use ntop as long-term monitoring application able to save traffic statistics on disk. However we suggest to use an … Continue reading

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How do I configure ntop on the nbox?

ntop is configured through the nbox web interface. The nbox also comes with a watchdog process that allows to restart ntop in case (unlikely) of fault. All the paths and flags that ntop users need to be familiar with in … Continue reading

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How many nProbe instances can I run on my nbox?

The nbox web gui allows you to configure two nProbe instance per physical nbox network interface, to avoid you starting too many instances and thus jeopardise performance. Of course we we disable this behaviour if necessary.

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Is the nbox coming with PF_RING support?

Yes, the nbox comes with the latest version of PF_RING that has been optimized for the nbox. Through the web gui it’s possible to tune PF_RING parameters, load vanilla or DNA drivers, without being a kernel expert.

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Why customers choose ntop?

nmon has been selected by hundred of customers because its products have been proven to be reliable, technically advanced, and affordable. Many customers have used ntop in the past, and decided to rely on ntop as they needed a reliable … Continue reading

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What is the competitive advantage of ntop?

In a globalized world where components coming from many countries need to be packaged together, ntop is unique as the products are home-grown with no dependencies on third parties. This means fast application development/customization and support directly from the source. … Continue reading

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Who builds the nBox?

ntop is a pure software company so we don’t do hardware. However we have some partners who build nBoxes on our behalf. So if you decide to buy an nBox, such companies will provide you first-level support and guarantee on … Continue reading

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What is the advantage of being a reseller?

We are coming from the open source community, hence we don’t like to put constraints on resellers. What we ask is to but at least one nBox, get familiar with it, and promote our products. There are no minimal yearly … Continue reading

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How do I install the nBox firmware on a flash disk?

When you get the nbox firmware you receive an image of a physical disk. The file name will be something like nbox_version.dd.gz. The first thing to do is to unzip the file and obtain nbox_version.dd. This file needs to be … Continue reading

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How do I make a physical copy/backup of a nBox flash disk?

All you have to do is to use a tool that allows you to do a physical copy of a device. Copying a nbox flash disk is similar to copying a standard disk device. On Linux you should use the … Continue reading

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nProbe (5)

Recommended nProbe Templates

This post explains how to use nProbe templates for monitoring various things included HTTP traffic, and network latency.

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What are the nProbe license terms?

nProbe is released in dual-license mode, depending on the use you plan to do with it.

This file describes the terms under which nProbe is distributed.

/* ************** IMPORTANT PLEASE READ ************** */

nProbe is (C) 2002-12 by Luca Deri … Continue reading

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How do I set the input and output interface Id?

By default nProbe tries to emulate a switched environment even if a mirror packet stream is used. For this reason both input and output interfaces are set to the last two bytes of the MAC address of the packet that … Continue reading

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How much bandwidth does NetFlow take during export?

Exporting traffic data in NetFlow takes some bandwith that can be pre-computed using various methods. Below you can find two calculators you can find to estimate it:

Flows-per-second Estimator NetFlow Bandwidth Calculator

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How to report a bug on ntop apps?

Unfortunately it can happen that our apps have a bug that leads them to crash. This note explains how to generate crash information that can be used to reproduce and resolve the issue. Whenever you have a bug to report, … Continue reading

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ntop (2)

Starting ntop on the correct network interface under Win32

ntop for Win32 is a service The ntop installer stores an empty set of options into the registry. Users who need to modify those options can:

Open a shell and test your options. In order to do this type "ntop … Continue reading

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How to report a bug on ntop apps?

Unfortunately it can happen that our apps have a bug that leads them to crash. This note explains how to generate crash information that can be used to reproduce and resolve the issue. Whenever you have a bug to report, … Continue reading

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PF_RING (0)

Why is the PF_RING DNA distribution format?

PF_RING DNA is made of two components: kernel drivers and user-space library. The kernel driver is released in source format as part of PF_RING, whereas the user-space library is released in binary format and it requires a per-MAC licenses.

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Products and Licenses (7)

What are the nProbe license terms?

nProbe is released in dual-license mode, depending on the use you plan to do with it.

This file describes the terms under which nProbe is distributed.

/* ************** IMPORTANT PLEASE READ ************** */

nProbe is (C) 2002-12 by Luca Deri … Continue reading

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What is the End-User License Agreement for binary products?

NTOP END USER LICENSE AGREEMENT THIS “END USER LICENSE AGREEMENT” (“EULA”) IS A BINDING LEGAL AGREEMENT. BY USING THE “SOFTWARES PROVIDED TOGETHER WITH THIS EULA” (THE “SOFTWARE”), OR USING ANY AUTHORIZATION CODE PROVIDED BY THE LICENSOR, YOU ACKNOWLEDGE THAT YOU … Continue reading

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What is your software licensing model?

Most of our products (e.g. ntop and PF_RING) are offered in source format under the GPL or LGPL licenses. Some of them that contain IPR (Intellectual Property Rights) (e.g. libzero for DNA) that we want to share only with selected … Continue reading

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Do you have an OEM License agreement?

We offer some of our products (e.g. nProbe) to OEMs who want to embed it onto their products, often hiding the fact that our products power their solutions. For these customers we have an OEM agreement.

 

NTOP OEM SOFTWARE … Continue reading

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Do you charge universities, no-profit, and research?

No, one of the main principles of ntop is that even if we need support for continuing our developments, we have never charged universities, education, no-profit and research. So if you qualify, we can offer our software products for free, … Continue reading

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Why do you publish product prices?

Most companies in the same business area hide prices. We don’t have anything to hide. Our prices are net and all inclusive, include direct developers support. However due to the large number of model options we have decided not to … Continue reading

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How do I generate licenses for binary products?

When you have purchased your product, you have also received a valid license and instructions on how to generate new ones if needed. Below you can find the main license generators:

Binary nProbe License Generator PF_RING DNA/Libzero License … Continue reading

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