Which fingerprinting techniques exploits the fact that operating systems differ in the amount of information that is quoted when ICMP (Internet Control Message Protocol) errors are encountered?
ICMP (Internet Control Message Protocol) message quoting
ICMP Message quoting: The ICMP quotes back part of the original message with every ICMP error message. Each operating system will quote definite amount of message to the ICMP error messages. The peculiarity in the error messages received from various types of operating systems helps us in identifying the remote hosts OS.