ICMP attacks

The ICMP (Internet Control Message Protocol) is a popular and widely-used Internet protocol. It is used primarily by networked computers to send various error messages.

Remote attackers attempt to exploit the weaknesses of the ICMP protocol. The ICMP protocol is designed for one-way communication requiring no authentication. This enables remote attackers to trigger so-called DoS (Denial of Service) attacks, or attacks which give unauthorized individuals access to incoming and outgoing packets.

Typical examples of an ICMP attack are ping flood, ICMP_ECHO flood and smurf attacks. Computers exposed to the ICMP attack are significantly slower (this applies to all applications using the Internet) and have problems connecting to the Internet.