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What is ICMP?

April 26, 2017ICMP

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What is ICMP?

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Internet Control Message Protocol (ICMP) defines a small number of messages used for diagnostic and management purposes. ICMP depends on IP to move packets around the network on its behalf. The fundamentals of ICMP are defined in RFC 792. RFC 1122 summarises the requirements that must be met by an ICMP implementation in an Internet host, and RFC 1812 summarises the ICMP requirements for an Internet router. ICMP is basically IP’s internal network management protocol and is not intended for use by applications.