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NetFlow

cisco catalyst

Cisco Catalyst 9200 / 9300 / 9400 / 9500 NetFlow Configuration

NetFlow is a great way to gather traffic statistics from your network. With Noction Flow Analyzer, you can view all your NetFlow data in...

Network Flow Monitoring

The Evolution of Network Flow Monitoring, from NetFlow to IPFIX

Network flow monitoring is an essential tool for a lot of network administrators. Flow monitoring allows you to collect and record all IP traffic...

What is NFA

So, what exactly is NFA?

When you’re managing a network, there’s so much to think about — from monitoring bandwidth, discovering traffic patterns to performing threat analysis and providing...

usage based billing

Usage-based billing with NetFlow and sFlow

Usage-based billing enables customers to pay only for data that they have used.  In order to charge customers based on data usage, a company...

Insider Thread

Insider Threat Detection with NetFlow

When it comes to major security concerns, one of the most serious ones are the data breaches and security exploits caused by insider incidents....

Multicast Traffic Monitoring

Multicast Traffic Monitoring and NetFlow

With the increasing popularity of multicast media applications, the monitoring of multicast traffic becomes more and more important. When it comes to NetFlow, it...

One Way Delay

One Way Delay Measurements and NetFlow

Role of RTT and OWD for TCP RTT stands for Round Trip Time and it is a length of time that a packet takes from...

Netflow Vendor

Questions to ask a NetFlow Vendor Before you Buy

Network visibility is crucial because we cannot manage and secure what we cannot see. NetFlow plays a critical role in traffic visibility by helping...

Netflow BGP

NetFlow and BGP

Border Gateway Protocol (BGP) is a core routing protocol used by most of the Internet Service Providers (ISPs). BGP’s role is to exchange routing...

network traffic analysis

Network Traffic Analysis and Alerting based on NetFlow

This article gives some insights on how to set up a network traffic analysis and alerting system based on NetFlow. NetFlow is an advanced...

SD-WAN

SD-WAN and NetFlow

Software-Defined Networking (SDN) in a Wide Area Network (WAN) - SD-WAN is a technology that simplifies management of WAN by decoupling control plane from...

BYOD Bring Your Own Device

Identifying, monitoring and securing BYOD traffic with NetFlow

Bring Your Own Device (BYOD) is a practice that allows users to bring their personal devices such as tablets or smartphones to the workplace...

Flexible Netflow

Finding MAC addresses using Flexible NetFlow

So far, we have discussed NetFlow configuration for network devices from various vendors such as Cisco, Juniper, Huawei, VyOS. We have collected layer 3...

Compromise detection

Web Applications compromise detection using Flow Data

Our previous article discusses flow-based SSH compromise detection. A force attack against SSH hosts consists of scan, brute-force and compromise phases that can be...

SSH

SSH Compromise Detection Using Flow Data

Secure Shell (SSH) provides a secure channel over an unsecured network in a client-server model. SSH is typically used to log into a remote...

DNS Amplification Attacks Detection with NetFlow or sFlow

The Internet we know nowadays cannot properly operate without using the Domain Name System (DNS). DNS syncs up domain names with IP addresses so...

SNMP Netflow

The Difference between SNMP and NetFlow. Why should I use both?

Simple Network Management Protocol (SNMP) is a well-known standardized application layer protocol, originally developed for network management but mostly used for network monitoring. SNMP...

Flow Deduplication

Automatic versus Manual NetFlow Deduplication

Duplication of NetFlow occurs when the NetFlow records about the same flow are exported multiple times to a NetFlow collector. In turn, the volume...

NetFlow Samplicator

Exporting Flow to multiple servers (Flow Samplicators)

In our previous article we have discussed the alternative way to get flow statistics using a NetFlow generator. One of the fundamental features of...

Netflow Generators

NetFlow Generators explained

What is a NetFlow Generator? A NetFlow generator is a dedicated network appliance or software running on a PC and listening on a single or...

NetFlow on VyOS

Configuring NetFlow on VyOS and Huawei Network Devices

This is the second part of the post dedicated to NetFlow configuration. In the first part, we’ve discussed the configuration of Flexible NetFlow on...

Flexible NetFlow Configuration

Configuring Cisco Flexible NetFlow and Juniper j-Flow v8

One of our recent blog posts dedicated to NetFlow technology provides the necessary knowledge needed to understand NetFlow principles and what it is used...

flow sampling

The accuracy and overhead of flow sampling. To use or not to use flow sampling?

Flow-based (NetFlow, IPFIX, NetStream) and packet-based (sFlow) network monitoring technologies enable network administrators to gain insight into traffic traversing a network. They provide various...

NetFlow

NetFlow vs. sFlow vs. IPFIX vs. NetStream. Network Traffic Analysis and Network Traffic Monitoring.

Network monitoring is a systematic effort to monitor parameters of a computer network in order to detect issues that degrade network performance. Network Traffic...


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