David Zamoya

David Zomaya

David is a CompTIA Network+ certified technical writer. He has over 5 years of experience in technical roles including support, sysadmin, sysadmin team lead, and director positions.

Articles by David
The Best Network Troubleshooting & Diagnostics Tools
We show you the best network troubleshooting and diagnostics tools that help make your job as a network administrator easier and provide examples and instructions to help you get started.
By David Zomaya in Net Admin on November 18, 2024
The Best SFTP Clients & Software for Windows and Linux
Looking for secure file transfer software tools for your network? We review the most popular FTP and SFTP clients to help you decide which one is right for you.
By David Zomaya in Net Admin on September 16, 2025
How to Fix “ECONNREFUSED – Connection refused by server” Error Step-by-Step
In this guide we show you how to resolve FileZilla's ECONNREFUSED - Connection refused by server error along with tips and tools that can help. This error is related to failed connections to an FTP, FTPS, or SFTP server.
By David Zomaya in Net Admin on November 14, 2024
The Best Network Throughput Monitoring and Testing Tools
Monitoring network throughput can help understand how your network is performing, enable you to better react to bottlenecks, help improve network planning, and lead to more effective network troubleshooting. We show you the best network throughput monitoring and testing tools.
By David Zomaya in Net Admin on November 19, 2024