The Elasticsearch upgrade process is somewhat straightforward. Download the upgrade, apply it, and then restart the Elasticsearch service. However, in NetVizura we are not using elastic-licensed Elasticsearch but apache-licensed installation. Elastic...

NoSQL databases differ in almost every aspect when compared to traditional RDBMS. While classic DBs (such as PostgreSQL) have, for example, dumps, Elasticsearch has the snapshotting capability that can be good in some cases but overwhelming in others...

Sometimes we want to limit the availability of the NetVizura application and add additional security layers. Reverse proxy and SSL configuration are here to ensure this. A reverse proxy is an application that forwards requests from client to server, ...

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...

PostgreSQL (commonly known as Postgres) is a well-known, solid as a rock database. And yes, from time to time it craves for an upgrade too. Today we will learn something about PostgreSQL Windows upgrade from version 9.6 to 12. KEEP IN MIND: As a...

Aruba is a global network company, a leader in Wi-Fi technology. Their most renowned merchandise are switches, which are purpose-built for the cloud, mobile and IoT. Users find Aruba CLI very comprehensible and its remarkably well designed GUI contai...

Open vSwitch (sometimes called OvS) is an open-source implementation of distributed virtual multilayer switch. The main role of OvS is to provide a switching stack for hardware virtualization and is slowly replacing Linux native bridge/bonds. Open vS...

In a day-to-day life of Network and security admins, QoS (Quality of Service) is a crucial mechanism in ordering all the data that travels through the network. QoS provides traffic prioritization as it enables a different level of importance to diffe...

A flow in networking terms is a unidirectional set of packets containing common attributes (source and destination IP, ports, protocols, etc). By using a flow protocol (e.g. NetFlow, sFlow, IPFIX), network devices can gather information about these a...

Untangle is a company that is renowned among SMBs, education and nonprofit organizations for its software-based applications that consist of NG firewall and SD-WAN router. Lately, Untangle has also developed Command Center, a remote cluster managed G...