ICMP

Internet Control Message Protocol (ICMP) is a supportive protocol used by network devices to communicate error messages and operational information. Essential for Linux network troubleshooting, ICMP enables tools like ping and traceroute to diagnose network connectivity and routing issues. Use ping www.google.com to send ICMP echo requests and test network reachability effectively.

Visit the following resources to learn more:

• @article@icmp(7) — Linux manual page
• @article@Understanding ICMP Packets with Examples