ICMP Courses

Computer Networks and the Internet
Kiron via edX

Networking Concepts for Beginners
Udemy

TCP/IP in der Praxis - Netzwerk-Kommunikation live erleben
Udemy

Protocol Deep Dive: ICMP
Pluralsight

Network+ Breakdowns and Labs
YouTube

Networking Foundations: Protocols and CLI Tools
LinkedIn Learning

Security Testing: Nmap Security Scanning
LinkedIn Learning