Selected tag: bandwidth monitoring

Sonicwall is one of the leaders in the cybersecurity and next-generation firewalls market. Also, this is one of the first companies that recognized a need for networked cybersecurity and observability on-prem and in the cloud. Their products can be physical, aimed at a wide range of customers from SMBs to Large enterprises, as well as virtual firewalls. Today we will configure virtual NsV 270

The OpenWrt Project is a Linux operating system that targets embedded devices. Instead of static firmware images, OpenWrt provides a filesystem with a package manager, similar to regular Linux systems. OpenWrt now supports numerous architectures, so you can install it on pretty much anything, even on hypervisors.

For the NetFlow configuration, we will use

Proxmox Virtual Environment is a hypervisor on which you can host Virtual Machines and containers. It is a complex environment with open-source clustering and advanced backup and network capabilities. Therefore, it is really important to have a proper network insight, and in this blog post we will show just how easy it is to set everything up. Let's get started.

First, we need to

Nutanix is a cloud OS for Hyperconverged Infrastructure (HCI). It allows you to control from one place your entire IT infrastructure, with a simple interface and/or on smartphones. Nutanix is usually used as a private cloud infrastructure, where the whole stack - processing, data, virtualization, and network resources - is integrated into Nutanix. Since you are putting all your eggs in one

Virtualization is ubiquitous in the IT world. However, with the ever-increasing complexity, we are faced with the fact that our old tools are insufficient nowadays. That is why we need to accustom ourselves to diverse types of NetFlow configuration. In this post, we will examine the case of Hyper-V, a hypervisor developed by Microsoft.

There are two types of Hyper-V

Since Ubuntu 16.04 is approaching its end-of-life (you can, of course, extend it with ESM though that's another story), there is a need to keep your system up-to-date. Unlike CentOS and Red Hat, which don't support in-place upgrades, Ubuntu (and Debian) support upgrading to the new LTS on-the-go.

Procedure

Before we start the upgrade procedure on the NetVizura server, we need

Usually, our customers configure NetFlow export directly on their devices (routers, switches, firewalls, etc). But in case the company policy (especially in Asian countries) prevents enabling export on devices, or if devices are not capable of exporting NetFlow data, we need to implement a NetFlow probe. There are paid probe software options available, however, we will focus on an open-source

NetVizura is a complex software composed of a few databases, Tomcat, and a lot of code, supported on Windows and numerous Linux distributions for AMD64 architecture. With the advent of 8GB RAM RPI 4, there have been numerous projects using this version in its implementation. Maybe the most famous would be ESXi on ARM with project Monterrey (we internally dominantly use Proxmox, while Xen and

OPNsense is an open-source, FreeBSD-based firewall distro. It provides a modern GUI and numerous plugins. A great plus is its ease of use, in contrast to some other open-source firewalls in the past. Also, OPNsense is a fork of Pfsense (we wrote about Pfsense, so check out that blog post as well - the link is below).

pfSense pfSense is a free network firewall distribution,

Elasticsearch is a NoSQL database, usually used as a search engine. However, with its powerful logic, it can be used for pretty much anything. In our case, we have used Elasticsearch to hold aggregated NetFlow data. As we are incorporating it step by step, currently Elasticsearch database is in the beta phase.

Elasticsearch holds data inside indices, which can be interpreted as a