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It uses the icmp echo response packet to carry its payload.
For example, '-p 21-25,80,113, 60000-' does what you would expect (a trailing hyphen means up to 65536, a leading hyphen means 1 through).
Be careful with this!
The popular ping command will use icmp.
Corporate E-mail Address: By submitting my Email address I confirm that I have read and accepted the Terms of Use and.The trace route command is world market mom sweepstakes used to discover the routes that packets actually take when traveling to their destination.Detection of your IP address: For some reason, a lot of scanners ask you to type in your IP address as one of the parameters.An effective fingerprinting can be done via SYN.Here are some of the (imho) useful features of nmap: dynamic delay time calculations: Some scanners require that you supply a delay time between sending packets.The connect system call provided by your operating system is used to open a connection to every interesting port on the machine.Flexible target specification: I often want to scan more then one host, and I certainly don't want to list every single host on a large network to scan.Windows uses icmp trace routes, while Linux-based systems use a UDP trace route.But it is sometimes useful to determine what hosts in a network are up by pinging them all.Time exceeded 18/18, address mask(req/rep) 12, parameter problem 10-Sep, router advertisement 5, redirection, iCMP Attack Types, iCMP Tunnelling.If we sniff the destination then we can see the entire data as well.

So by using icmp tunnelling, one can inject arbitrary data into an echo packet and send to a remote computer.
So infact when a type 0 (echo reply) is sent, the reply will no longer be a Type 8 (echo request).
Here is a line up of the most common: TCP connect scanning : This is the most basic form of TCP scanning.220 lem FTP server (SunOS.1) ready.The prevention of these attacks is almost identical to Fraggle attack.Scanning these machines involves the same brute force technique.Actually, it is often useful to discriminate between a *NIX and NT box, and this can be used to do that.