Hi malware fighters,
With this command-line tool one could join tcp-packets and analyze them. Can be used as a portscanner, traceroute or remote OS fingerprinting. Besides tcp also udp, icmp and raw-ip supported.
Hping get from:
http://www.hping.org/Ontwikkelaar: Salvatore Sanfilippo
Free (GNU Public License v2)
Manual to start :
http://wiki.hping.org/94polonus