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 […]
nProbe IPS: How To setup an Inline Layer-7 Traffic Policer in 5 Minutes
Introduction Recently, we have added Intrusion Prevention System (IPS) capabilities to our nProbe. Those capabilities are available starting from the latest 9.5 version, both for Linux and FreeBSD – including OPNsense and pfSense, and are available with all nProbe versions and licenses (see the product page for additional details). On Linux, nProbe leverages the netfilter […]
Measuring nProbe ElasticSearch Flow Export Performance
nProbe (via its export plugin) supports ElasticSearch flows export. Setting up nProbe for the ElasticSearch export is a breeze, it just boils down to specifying option –elastic. For example, to export NetFlow flows collected on port 2058 (–collector-port 2058) to an ElasticSearch cluster running on localhost port 9200, one can use the following nprobe -i […]
How to export BGP routing information (AS Path) in network flows
Tools like traceroute have been used for a long time to track the forward path of packets, i.e. the journey of our packets to a remote destination. Unfortunately with traceroute nothing can be said about the path of ingress packets, it not assuming that routing is symmetrical, fact that is often not correct. For this […]
Network Monitoring 101: A Beginner’s Guide to Understanding ntop Tools
The first important step to start with network monitoring is to analyze what we want to monitor and how to deploy the monitoring solution in the existing network. Here are some important questions to ask ourselves before starting the actual monitoring: Do we need to monitor the entire network or just a specific segment? Do […]
nProbe 8.2 stable is out – A Wink At Next-Gen ASA Firewalls
We are pleased to announce that the new 8.2 release of nProbe is out. This release features full Cisco ASA NetFlow support. ASA are industry’s first threat-focused next-generation firewalls that export a rich set of information through NetFlow. Being able to collect ASA data using nProbe will give you an advantage over collectors that only interpret […]
Stream That Flow: How to Publish nProbe/Cento Flows in a Kafka Cluster
Apache Kafka can be used across an organization to collect data from multiple sources and make them available in standard format to multiple consumers, including Hadoop, Apache HBase, and Apache Solr. nProbe — and it’s ultra-high-speed sibling nProbe cento — integration with the Kafka messaging system makes them good candidates source of network data. The delivery of network data to a […]