Tim Keary

Tim Keary

Network Security and Administration Expert

Tim writes extensively on network administration topics helping businesses and entrepreneurs to keep their data and assets protected. He was previously the cybersecurity editor at VentureBeat and has been freelance since 2017.

Articles by Tim
How to use the Wireshark Network Protocol Analyzer [Tutorial]
In this tutorial, you will find out how Wireshark works. We will take you through the steps of locating the Wireshark program and installing it on your computer. You will find out how to start up a packet capture and what information you can expect to get out of it. The Wireshark tutorial will also show you how to get the best out of the data manipulation functions within the interface. You will also learn how you can get better data analysis functions than those that are native to Wireshark.
By Tim Keary in Net Admin on November 30, 2024
Nagios Core vs Zabbix Comparison
Nagios Core vs. Zabbix: Learn which open-source network monitoring tool is the right choice for your organization.
By Tim Keary in Net Admin on December 9, 2024
What is Multi-Protocol Label Switching or MPLS?
Multi-Protocol Label Switching (MPLS) enhances network routing by using labels instead of IP addresses, boosting speed and efficiency.
By Tim Keary in Net Admin on February 25, 2025
Linux Shell – Getting Started
Boost productivity with the Linux shell. This guide covers key commands, scripting basics, and automation tips for beginners and advanced users.
By Tim Keary in Net Admin on March 11, 2025
SolarWinds NPM Vs Zenoss Core
In this article we compare SolarWinds Network Performance Monitor and Zenoss Core to see which is best. Includes a detailed comparison of features and pricing options.
By Tim Keary in Net Admin on October 1, 2024
SolarWinds NPM vs Nagios XI
Full Comparison: SolarWinds NPM vs Nagios XI. Including a breakdown of the key features, reports, alerts, pricing, requirements, and more & our top pick.
By Tim Keary in Net Admin on February 25, 2025
CCNA Routing and Switching vs CCNAX
Not sure whether to take CCNA Routing & Switching or CCNAX? This guide breaks down the key differences, costs, and difficulty levels.
By Tim Keary in Net Admin on March 14, 2025
Software-Defined Networking – SDN Guide
In this guide, we break down what SDN is, and look at the advantages and disadvantages of leveraging this technology within an enterprise environment. We also look at how SDN compares to traditional networking.
By Tim Keary in Net Admin on November 30, 2024
The Definitive Guide to Nmap: Scanning Basics Tutorial
Nmap (or “network mapper”) is one of the most popular free network discovery tools on the market. In this guide we show you how Nmap works and how to use it.
By Tim Keary in Net Admin on December 17, 2024
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