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

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 August 3, 2026
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 July 10, 2026
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
Network throughput monitoring tools help IT teams measure traffic, detect bottlenecks, troubleshoot performance, and plan network capacity.
By David Zomaya in Net Admin on August 7, 2026