The Internet Control Message Protocol may seem harmless at first glance. Its goals and features were outlined in RFC 792 (and than later cleared in RFCs 1122, 1256, 1349, 1812), as a way to provide a means to send error messages, troubleshoot networking problems, and more. There is no consent between the experts in charge for securing Internet networks (Firewall Administrators, Network Administrators, System Administrators, Security Officers, etc.) regarding the actions that should be taken to secure their network infrastructure in order to prevent those risks. The risks involved in implementing the ICMP protocol in a network, regarding scanning, are the subject of this research paper.

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