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Hping is a packet crafter which can be generally used for many purposes: * Advanced Port-Scanning * Advanced traceroute * Manual path MTU discovery * Firewall Testing * Testing and Debugging Software * Remote OS fingerprinting * Remote uptime guessing * TCP/IP stacks auditing * Network testing, using different protocols, TOS, fragmentation * Educational Purposes

Note that we can encounter the following flags: * SA (syn/ack), this is the response for an open port generally * RA (rst/ack), this is the response for a closed port generally