# The Network

The Network: Is It the Network? ping, curl -I and Ports.

Updated: November 10, 2026

1. [Is It the Network? ping, curl -I and Ports](https://www.ask-codey.com/lessons/bash-network-checks) (Journeyman): When a website or server doesn't answer, four quick checks find the broken link: ping asks whether the computer answers, curl -I whether the website does, ss or lsof which program is listening on a port, and dig which address a name points to.

Source: https://www.ask-codey.com/courses/bash-in-depth/topics/bash-the-network