ICMP Last modified: Wednesday, May 23, 2001
Short for Internet Control Message Protocol, an extension to the Internet Protocol (IP) defined by RFC 792. ICMP supports packets containing error, control, and informational messages. The PING command, for example, uses ICMP to test an Internet connection.
•E-mail this definition to a colleague• For internet.com pages about ICMP . Also check out the following links! RFC 792 Requests for Comments document for the Internet Control Message Protocol (ICMP).	Internet Protocols IP ping Give Us Your Feedback Shopping ICMP Products Compare Products,Prices and Stores Shop by Category: Firewalls 97 Model Matches Routers 69 Model Matches Networking Hubs and Switches 198 Model Matches