ICMP stands as a fundamental protocol that quietly ensures the smooth functioning of our interconnected world. Although often overshadowed by more widely recognized protocols like TCP and UDP, it plays a crucial role in facilitating communication between devices on the internet.

What is ICMP?

ICMP, or Internet Control Message Protocol, operates at the network layer of the Internet Protocol (IP) suite. Its primary function is to provide error reporting and diagnostic capabilities for IP. Originally designed as part of the IP protocol suite defined by RFC 792 in 1981, ICMP has evolved over time to encompass various functions essential to network management and troubleshooting.