Package hping3

TCP/IP stack auditing and much more

http://www.hping.org/

hping3 is a network tool able to send custom TCP/IP packets and to
display target replies like ping do with ICMP replies. hping3 can handle
fragmentation, and almost arbitrary packet size and content, using the
command line interface.
Since version 3, hping implements scripting capabilties

System Administration (Section 8)
hping3
hping3 is a network tool able to send custom TCP/IP packets and to display target replies like ping program does with ICMP replies. hping3 handle fragmentation...