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Enter a keyword...   ...or choose a category. choose one... Communications Computer Industry Companies Computer Science Data Graphics Hardware Internet and Online Services Mobile Computing Multimedia Networks Operating Systems Programming Software Standards Types of Computers World Wide Web   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.   RFC 792 Requests for Comments document for the Internet Control Message Protocol (ICMP). Related Categories Internet Protocols Related Terms IP ping Shopping ICMP Products Compare Products,Prices and Stores Shop by Category: Routers 98 Model Matches Firewalls 88 Model Matches Networking Hubs and Switches 192 Model Matches IP Phones 21 Model Matches Other Network Devices 49 Model Matches