<s>
hping	B-Protocol
is	O
an	O
open-source	O
packet	B-Protocol
generator	I-Protocol
and	O
analyzer	O
for	O
the	O
TCP/IP	B-Protocol
protocol	I-Protocol
created	O
by	O
Salvatore	B-Operating_System
Sanfilippo	I-Operating_System
(	O
also	O
known	O
as	O
Antirez	O
)	O
.	O
</s>
<s>
It	O
is	O
one	O
of	O
the	O
common	O
tools	O
used	O
for	O
security	O
auditing	O
and	O
testing	O
of	O
firewalls	B-Application
and	O
networks	O
,	O
and	O
was	O
used	O
to	O
exploit	O
the	O
idle	O
scan	O
scanning	O
technique	O
(	O
also	O
invented	O
by	O
the	O
hping	B-Protocol
author	O
)	O
,	O
and	O
now	O
implemented	O
in	O
the	O
Nmap	B-Language
Security	I-Language
Scanner	I-Language
.	O
</s>
<s>
The	O
new	O
version	O
of	O
hping	B-Protocol
,	O
hping3	O
,	O
is	O
scriptable	O
using	O
the	O
Tcl	B-Operating_System
language	O
and	O
implements	O
an	O
engine	O
for	O
string	O
based	O
,	O
human-readable	O
description	O
of	O
TCP/IP	B-Protocol
packets	O
so	O
that	O
the	O
programmer	O
can	O
write	O
scripts	O
related	O
to	O
low	O
level	O
TCP/IP	B-Protocol
packet	O
manipulation	O
and	O
analysis	O
in	O
a	O
short	O
time	O
.	O
</s>
